It’s totally doable. I’m down to 0 Windows computers and my main gaming rig can play almost anything I throw at it bar the obvious caveats of anti-cheat and such.

I won’t lie and say it’s perfect. I definitely get more performance inconsistency on Linux, even though it’s overall faster compared to Windows. And I’ve had the odd game here and there that just didn’t agree with Proton, but those I just returned and played something else instead