Not in the way you’re hoping for. Proton is a wine offshoot, which means it’s exclusive to x86 and x86_64 arches. You could perhaps get it to run by installing qemu and setting it up to run x86_64 binaries, but even if that worked you’d likely end up with single-digit FPS in most games.
Based on what Gentoo currently has keyworded, you should be able to get a solid useful desktop—KDE or Gnome (or sway, if that’s your preference), Firefox, Libreoffice, Gimp, VLC, and other popular basics—but I wouldn’t expect games or other proprietary software for a while yet, if ever.
Once there is Debian support, would it just run all software that Debian runs ie steam proton?
Not in the way you’re hoping for. Proton is a wine offshoot, which means it’s exclusive to x86 and x86_64 arches. You could perhaps get it to run by installing qemu and setting it up to run x86_64 binaries, but even if that worked you’d likely end up with single-digit FPS in most games.
Based on what Gentoo currently has keyworded, you should be able to get a solid useful desktop—KDE or Gnome (or sway, if that’s your preference), Firefox, Libreoffice, Gimp, VLC, and other popular basics—but I wouldn’t expect games or other proprietary software for a while yet, if ever.