Even if it had full comparability, you won't have switched to linux. You don't need reasons to do it, except your own wish

Eh, works fine for me. I have a lot of games to choose from, so I'm really not lacking on selection.

That said, I totally get it if it doesn't work for the things you need. Use what works. Linux works better for me than Windows, so it's what I use.

Which games? I don't think I've ever encountered a game that didn't run with Proton out of the box.

Some game updates just break proton compatibility.

first, file a report. so devs are aware of your problem.

second, i feel you. i'm in the same situation. if i switch to linux right now, my stream deck will lose features and i probably on't be able to use my steering wheel anymore. plus i really struggled to install fusion360.