Proton is incredible. Linux has come so far in the last couple years for gaming. I'm running Intel/Nvidia (which used to be a big no-no), playing 99% of what I want to play with no issues. If I ever see issues it's usually a game that uses anti-cheat. Even the vast majority of my games work fine now. Controller support is simple too.
I'm guessing another year an I won't have Windows in my setup at all.