Archive: https://archive.today/TI6VI From the post: >>At some point recently, Valve updated the Steam Beta Client with a change to the way Proton is enabled making Linux gaming easier. Quick note for newbies: Proton is a compatibility layer to run Windows games on Linux systems available on Steam. For some context here: originally, Proton had an option to enable / disable it globally. That was removed with the Game Recording update last year. That made sense, because people kept somehow turning it entirely off and now it's required by Steam.