Kernel Level Anti-Cheat. If you don’t understand that, then you don’t know if Linux is good or bad for “gaming”.
Basically everything you want to play on Linux, that is not supported by the anti-cheat kernel is screwed.
“Steam offers all these game to play on Linux” - yes, but I played them all 20 years ago.
Try playing something like Genshin Impact. You cannot, the anticheat is Windows only. (PS and consoles, it relies on anticheat mech’s from the HW). They don’t offer a Linux version - so you are screwed.
Does it have EAC or Battleeye? You are shit out of luck.
The Linux Desktop is ready for primetime, but not for gaming. You need a windows boot for gaming, unless you are playing Half-Life…