FWIW, I'm running Steam on Arch and it's working great. I remember that there were occasional issues with library version mismatches when I first started out with it, but I have not had any problems in the last... 3 years at least.

However, it should be noted that I don't play much AAA stuff. Most of my playtime is actually on the Nintendo Switch. The playtime that is in Steam is mostly in Linux native games (Tabletop Simulator, Cities Skylines, Unrailed, etc.), but the few Proton games that I've tried have all worked great.

used ubuntu for a longer while & gave arch a shot, the initial setup might seem ugly, but its not that hard and the distro is just gold, just need some time to set everything up