Svidler spoke out about the Niemann case.

Russian grandmaster Peter Svidler commented on the scandal surrounding the American Hans Niemann. The grandmaster is suspected of cheating in more than a hundred games in online tournaments.
“Chess.com's investigation looks convincing. I am satisfied with everything that is collected in their analysis.
As for Niemann's cheating, there are no doubts about cheating online - the intrigue remained only in the question of his play over the board. Unfortunately, the Chess.com report does not provide a definitive answer to this question.
I would like online cheating to be taken and punished much more seriously than it is at the moment. Although I’m not sure that the majority has such a position, given that even major chess functionaries claimed that this was a “grey area,” Svidler said.