I am now having a brief fantasy of a world where Apple pulls Proton into the OS as a Windows emulation layer for games and starts pushing their changes upstream just like Valve does.

I can think of many reasons why it would never happen but it sure would be nice. Not that I haven't been voting against Mac games with my wallet for years, I've had a Mac to get shit done with and a rotating set of consoles to play games on since about 2000, and very occasionally bought a point-and-click adventure for the Mac.