Steam deck made gaming work really well, sometimes better than windows with the same hardware. It isn’t 100% compatible of course, but it does work for most things.
Not being 100% compatible makes it a non-starter. I only use Windows on my gaming machine, and until I can play all the games I play with no performance hit, I am not going to switch.
You’re confusing 100% compatible with all the games you play. All the games I play are 100% compatible, I’ve already switched. If the ones you play aren’t, of course you won’t switch. The question is whether you checked or just assumed they don’t work.