Considering Ace Combat but I don’t remember the games I tried years ago quite nailing the feeling for me. Maybe things have changed though

From what I understand transforming your PS5 into a Linux machine can get dangerous. Done wrong you are without both. Also when it is working games only work so well. When you play on Steam you’re mostly working with the Windows version and those drivers. Proton from what I understand probably isn’t optimized for AMD PlayStation drivers. Also PC hardware (like steering wheels , controllers) might not play well with the PlayStation motherboard .

It’s more than possible to do. And in some cases the games run even better on Linux vs PlayStation. But depending upon desired games your mileage may vary.

Research the hell out of it and make a decision then

Best of luck …