I play online games and i hate cheaters. Like they said, cheats are a huge industry now with talented people working hard on them. This is what it takes to stop them.
If you don’t want to play these games you don’t need to install any of this. But this is not unusable and none of this is impossible for distros. Most of this stuff is super common and the average linux user wouldn’t even notice.
Distros will just offer a “gaming-ready” image/mode that enables these restrictions and users can choose to use it or not.