Nah this is more systemd bloat and certainly invites criticism. Other inits aren’t even commenting, let alone complying.

Which games? Protondb is a great resource to see what games work on Linux. But basically all you need to do is add a game to either Steam or Heroic Launcher and then set the game to launch with Proton. That site will tell you if you’ll need a specific version of Proton for a game.

Use the Heroic Launcher. It uses the same proton as steam but doesn’t launch through steam.