Even gamers nexus’ Steve today said that they’re about to start doing Linux games performance testing soon. It’s happening, y’all, the year of the Linux desktop is upon us. ᕕ(ᐛ)ᕗ
Edit: just wanted to clarify that Steve from GN didn’t precisely say they’re starting to test soon, he said they will start WHEN the steam OS releases and is adopted. Sorry about that.
In my experience pretty much everything works this easily. Steam games are a click away, Linux support or not. For things outside of steam you can either copy the install folder from a Windows install or just run the installer through Proton.