Exactly. As someone else pointed out some AAA titles don't work, and stuff with strong DRM/anti-cheat won't, but that's a minority of stuff at this point which will only dwindle further.
Even then... with Vavle's efforts, a lot of DRM just takes a software update (mostly) to work in Proton/Linux. Not that a lot of the older AAA titles have been updated (or even recent ones). But it's consistently getting better.
Will have to see which direction things head over time.
