It isn't something i'd recommend to some random gamer (though judging from what i've seen people do with their Steam Decks i wouldn't underestimate gamers' technical abilities).
[0] like, say, me :-P. In 2020 i used Windows as my main OS after trying to switch to Linux as my main OS in 2018 but having some issues with games, but then i ended up having some visual glitches in a game that were fixed by throwing in DXVK. At that point i thought that this might actually be a sign that gaming on Linux now works fine - and indeed it did and since then i've being using it as my practically only OS because i can both work and game on it without feeling like i'm missing anything.
If it is buggy, they play something else. There is a wide enough offer for this strategy to work really well.
Being driven to install tools to get it to run is an exceptional behaviour and a lot of hassle for anyone, windows or Linux. Nearly noone does that.
I don't know what most people do as i am not most people, but i already addressed my expectations and assumptions on the first paragraph of the comment you replied to.