I can only speak for myself, but as a gamer I don’t have a lot of complaints with gaming on linux. If most of your games are on steam they should work fine on linux thanks to proton (and steamdeck too). Sure, if you play a lot of multiplayer games where the anti-cheat doesn’t tolerate linux, then staying on windows is understandable. Outside of steam, there are other launchers, lutris and heroic, for example.

I’m personally still dual booting, because one game that I played still doesn’t work on linux, but as I don’t play that game anymore nor have I booted to windows in like 6 months, I might as well get rid of windows once and for all.