Though my experience with using Windows drives was mixed. Steam always wanted to re-download Linux versions of games if available, so everytine I switch in between OSes, my download queue gets full. There’s a workaround for forcing Windows versions on Linux Steam though.
And you don’t even need to give up on Windows! You can keep it on dual boot until you realize you didn’t touched Windows even once over the last 6 months.
EU is pretty good at funding stuff actually, but mind your pitchforks if you see Hyprland, Ladybird or some other bigotfueled projects on some collateral-funding list.
Can you please let us know how the transition went after a few weeks? I’m also considering the same but I’m also content with Apple Photos features like live photos etc.
Then again, somehow I don’t expect Valve’s expenditures are that high, except download server costs.