Proton and the like should be mostly ok on most Linux distro, the main reason for arch for a lot of people is the AUR and being able to get the latest updates first. It's a bit of a double edged sword, but it rarely is an issue once you get the basics down. That being said make sure to occasionally read the arch wiki, it's often a better resource than just copy pasting forum fixes that might cause other issues or just not work. Hope you enjoy!