Disclaimer beforehand: not disagreement or criticism, but curiosity and context:
"The India 2 team consists of monsters in their mid-teens who will probably all be at or very near 2800 by the next Olympiad."
That's a bold prediction for 2024, two years from now - a bit but not too much dependent on the definition of "very near".
Of all 2800+ players present or relatively recent, only Carlsen and Firouzja managed to get from 2700 to 2800 in about 2 years (2 years and 4 months to be precise). For Carlsen, it may have been a bit faster if rating lists had been monthly at the time, for Firouzja without the pandemic.
4 years seems "standard" or average/median: Caruana (while already close - 2796 - one year earlier), So, Vachier-Lagrave. Giri was relatively fast (3 1/2 years to get close, 2797, and cross 2800 live) but remained "stuck below 2800" ever since. 5 years for Aronian, 6 years for Ding Liren, 6 1/2 years for Nakamura, 7 years for Radjabov to reach 2799.6 live. And the extremes Nepomniachtchi (10 1/2 years to reach 2797 live) and Mamedyarov (11 1/2 years).
Do you consider ALL young Indian players to be "as exceptional" as Carlsen and Firouzja? A case can be made for Gukesh, the others on team India 2 still have to cross 2700. Or do you expect things to go faster nowadays in general, also for non-Indian prodigies (Abdusattorov, Keymer, maybe also Niemann while he is already 19)? Of course, any prodigy may still follow in the footsteps of Wei Yi (rising star that quit rising).
I'm not claiming that they will be 2800, though that doesn't seem out of range for Gukesh, but at or near it. I should specify that I had Gukesh, Pragg and Nihal Sarin in mind. (Also Erigaisi, who should have been on India 2, swapped with Adhiban.) It may very well be an overly optimistic prediction, but I have been impressed by all three. One thing I would add is that there may still be a COVID lag, and some talented juniors' ratings may not yet have caught up to their strength.
As for the others, Abudsattorov seems a likely candidate for 2800dom in the not-too-distant future. Keymer's got a chance as well, though I don't expect him to be over (as opposed to "near") 2800 by the next Olympiad. As for Niemann, he's a bit of a mystery to me. In some events, he doesn't seem at all like a potential top GM, but then you look at his rating trajectory in classical chess and it's exceptional. Beats me. It's good for him that he's getting some opportunities to play absolute top players, as it will give him some clear direction for his future work.
I don't get the meaning (obvious to native English speakers and/or intended by you) of "at" 2800, but that's a detail.
A COVID lag may well exist, and apparently affected the Indian team lineups. According to GM Ramesh, coach of the second team interviewed by chess.com India, it was done strictly by rating - three months averages at some time before the event. At this moment, besides Vidit, Harikrishna and Erigaisi also Sasikiran and Narayanan were ahead of the other youngsters and thus ended up on the first team. It would have been more of a luxury problem if Anand had been available rather than focusing on chess politics. It would have been a real problem if the Olympiad hadn't been held in India and they could have sent just one team. Uzbekistan didn't have such a problem, I assume Kasimdzhanov conceded his spot voluntarily.
Opinions on which prodigy is most promising and will make most further progress seem to keep changing, it's tempting to focus on the most recent results. Erigaisi is a late bloomer by prodigy standards, Gukesh was somewhat in the shadow of Pragg and Nihal Sarin until recently - not because he was worse, but the others got more media attention. A previous "benchmark" - all playing the same event and getting (potentially) similar opponents - was the FIDE Grand Swiss in October/November 2021. Then Keymer (qualifying for the FIDE Grand Prix Series) and Nihal Sarin were well ahead of the rest - Abdusattorov, Pragg and Gukesh scoring 50% or less. It was a moment in time, the Olympiad is another moment in time in the long-term picture? Home advantage may have played a role for the Indian prodigies (no travelling, familiar with climate, ...). Though Biel just before the Olympiad was advantage Gukesh vs. Abdusattorov and Keymer.
Currently, the race already continues at different locations: Pragg (and Niemann) play in Miami - strong opponents in rapid, most in the spotlight but unable to gain (or lose) Elo. Gukesh and Abdusattorov play the Turkish League, Erigaisi, Nihal Sarin and others play the Abu Dhabi Open, Keymer plays the German Masters. If they march on towards 2800, they will or should also get supertournament invitations. Who will get them - Wijk aan Zee 2023 will probably invite some, but not all? How will they fare?
For what it's worth, it partly explains my interest in the topic: As youth coordinator of my former club (from Munich, competing at Bavarian and sometimes German level in various age categories) I had to make choices on team lineups and board order - at a much lower level (broadly national Elo 1000-1600). I included not just most recent Elo but also my own impression of the players - recent games (not just results), current attitude and motivation, .... . I sometimes clashed with parents who (regardless of whether they play chess themselves) wanted preference for their kids - people in charge at higher levels face (inter)national scrutiny. Two players whom I considered underrated when I left in February (to a different city for professional reasons) have gained about 200 points in the meantime - so my gut feeling and 1900ish chess understanding wasn't all wrong?!
Disclaimer beforehand: not disagreement or criticism, but curiosity and context:
"The India 2 team consists of monsters in their mid-teens who will probably all be at or very near 2800 by the next Olympiad."
That's a bold prediction for 2024, two years from now - a bit but not too much dependent on the definition of "very near".
Of all 2800+ players present or relatively recent, only Carlsen and Firouzja managed to get from 2700 to 2800 in about 2 years (2 years and 4 months to be precise). For Carlsen, it may have been a bit faster if rating lists had been monthly at the time, for Firouzja without the pandemic.
4 years seems "standard" or average/median: Caruana (while already close - 2796 - one year earlier), So, Vachier-Lagrave. Giri was relatively fast (3 1/2 years to get close, 2797, and cross 2800 live) but remained "stuck below 2800" ever since. 5 years for Aronian, 6 years for Ding Liren, 6 1/2 years for Nakamura, 7 years for Radjabov to reach 2799.6 live. And the extremes Nepomniachtchi (10 1/2 years to reach 2797 live) and Mamedyarov (11 1/2 years).
Do you consider ALL young Indian players to be "as exceptional" as Carlsen and Firouzja? A case can be made for Gukesh, the others on team India 2 still have to cross 2700. Or do you expect things to go faster nowadays in general, also for non-Indian prodigies (Abdusattorov, Keymer, maybe also Niemann while he is already 19)? Of course, any prodigy may still follow in the footsteps of Wei Yi (rising star that quit rising).
I'm not claiming that they will be 2800, though that doesn't seem out of range for Gukesh, but at or near it. I should specify that I had Gukesh, Pragg and Nihal Sarin in mind. (Also Erigaisi, who should have been on India 2, swapped with Adhiban.) It may very well be an overly optimistic prediction, but I have been impressed by all three. One thing I would add is that there may still be a COVID lag, and some talented juniors' ratings may not yet have caught up to their strength.
As for the others, Abudsattorov seems a likely candidate for 2800dom in the not-too-distant future. Keymer's got a chance as well, though I don't expect him to be over (as opposed to "near") 2800 by the next Olympiad. As for Niemann, he's a bit of a mystery to me. In some events, he doesn't seem at all like a potential top GM, but then you look at his rating trajectory in classical chess and it's exceptional. Beats me. It's good for him that he's getting some opportunities to play absolute top players, as it will give him some clear direction for his future work.
I don't get the meaning (obvious to native English speakers and/or intended by you) of "at" 2800, but that's a detail.
A COVID lag may well exist, and apparently affected the Indian team lineups. According to GM Ramesh, coach of the second team interviewed by chess.com India, it was done strictly by rating - three months averages at some time before the event. At this moment, besides Vidit, Harikrishna and Erigaisi also Sasikiran and Narayanan were ahead of the other youngsters and thus ended up on the first team. It would have been more of a luxury problem if Anand had been available rather than focusing on chess politics. It would have been a real problem if the Olympiad hadn't been held in India and they could have sent just one team. Uzbekistan didn't have such a problem, I assume Kasimdzhanov conceded his spot voluntarily.
Opinions on which prodigy is most promising and will make most further progress seem to keep changing, it's tempting to focus on the most recent results. Erigaisi is a late bloomer by prodigy standards, Gukesh was somewhat in the shadow of Pragg and Nihal Sarin until recently - not because he was worse, but the others got more media attention. A previous "benchmark" - all playing the same event and getting (potentially) similar opponents - was the FIDE Grand Swiss in October/November 2021. Then Keymer (qualifying for the FIDE Grand Prix Series) and Nihal Sarin were well ahead of the rest - Abdusattorov, Pragg and Gukesh scoring 50% or less. It was a moment in time, the Olympiad is another moment in time in the long-term picture? Home advantage may have played a role for the Indian prodigies (no travelling, familiar with climate, ...). Though Biel just before the Olympiad was advantage Gukesh vs. Abdusattorov and Keymer.
Currently, the race already continues at different locations: Pragg (and Niemann) play in Miami - strong opponents in rapid, most in the spotlight but unable to gain (or lose) Elo. Gukesh and Abdusattorov play the Turkish League, Erigaisi, Nihal Sarin and others play the Abu Dhabi Open, Keymer plays the German Masters. If they march on towards 2800, they will or should also get supertournament invitations. Who will get them - Wijk aan Zee 2023 will probably invite some, but not all? How will they fare?
For what it's worth, it partly explains my interest in the topic: As youth coordinator of my former club (from Munich, competing at Bavarian and sometimes German level in various age categories) I had to make choices on team lineups and board order - at a much lower level (broadly national Elo 1000-1600). I included not just most recent Elo but also my own impression of the players - recent games (not just results), current attitude and motivation, .... . I sometimes clashed with parents who (regardless of whether they play chess themselves) wanted preference for their kids - people in charge at higher levels face (inter)national scrutiny. Two players whom I considered underrated when I left in February (to a different city for professional reasons) have gained about 200 points in the meantime - so my gut feeling and 1900ish chess understanding wasn't all wrong?!