When you are talking about “popular” games, you mean service games that are often some kind of multiplayer games. Each of them binds a lot of players and is big and popular, indeed. But these are only a few compared to the amount of games that have been released in the past decade. Let alone released games from 2024 that are listed on imdb.com are 1551 Imdb.com

So yes, I can imagine 90% is right since the most games are no service games and do not require some shitty kernel level anti cheat.

For bugs: I have no idea since I only use linux for non-gaming tasks.