There seems to be a bit of personal animus between Nakamura and Kramnik for whatever reason. I agree that Kramnik should not have made the accusation in the first place (and neither Nakamura nor Carlsen should have made a similar claim against Niemann last year). Cheating accusations by one player against another simply should not made or implied. If a player suspects his opponent is cheating, he should report those suspicions to tournament officials, and it is they who should investigate and, if cheating is verified, make it public.
There seems to be a bit of personal animus between Nakamura and Kramnik for whatever reason. I agree that Kramnik should not have made the accusation in the first place (and neither Nakamura nor Carlsen should have made a similar claim against Niemann last year). Cheating accusations by one player against another simply should not made or implied. If a player suspects his opponent is cheating, he should report those suspicions to tournament officials, and it is they who should investigate and, if cheating is verified, make it public.