There's also a report on the chess24 "wall" https://new.chess24.com/wall/news/magnus-carlsen-withdraws-from-the-sinquefield-cup, including "The obvious implication of Carlsen's withdrawal and other changes in St. Louis is that Magnus suspects foul play but is unwilling to make a public accusation." Not mentioned on chessdom, but his tweet embeds a video by football (soccer) coach Jose Mourinho saying "If I speak I am in big trouble" (unhappy with a referee ....).
I like Nepo's reaction, though it helps to watch his facial expressions at the same time: Hans' win over Magnus was "more than impressive".
There's also a report on the chess24 "wall" https://new.chess24.com/wall/news/magnus-carlsen-withdraws-from-the-sinquefield-cup, including "The obvious implication of Carlsen's withdrawal and other changes in St. Louis is that Magnus suspects foul play but is unwilling to make a public accusation." Not mentioned on chessdom, but his tweet embeds a video by football (soccer) coach Jose Mourinho saying "If I speak I am in big trouble" (unhappy with a referee ....).