Individual apps, particularly full-screen games, shouldn’t need “Wayland support”(quotes because what that means will vary between implimentations).
Now, if you have to install xorg on a system that doesn’t have it in order to play a game? Yeah that would suck, although games are on my personal shortlist of application categories that should always be run from a flat-pack/equivalent and/or containerized wherever possible.
Now I think about it, why don’t (anti-cheat)games just run their own VM’s and “calibrate” those versus any weird system variables? Seems like a better anti-cheat than hacking-my-kernel-to-make-sure-I’m-not-hacking-the-game…