I really enjoy Linux but I find myself having to keep Windows partitions around for software that specifically requires Windows.
Proton makes everything easier by automatically running game files through a translation layer, and it “just works” quite well most of the time.
Also VanillaOS can apparently auto-spin a container when you try to open a .deb or AUR package (this is my rudimentary understanding).
Setting up WINE/Bottles, etc. is above my pay grade.
Is it not possible to create an OS that just does the same thing as Steam but for the entire OS?
The bottles flatpak is the official release so people not on an arch based system can/should use that
Even people on Arch should use it. It ensures better isolation of processes and is the only supported installation method if you ever have issues.