Wine existed before Proton, Valve made it better but the project doesn't rely on Valve. Currently Linux is the best gaming experience. Zero bloat or nagware, everything just works. It's just ironic Wine/Proton ended up being the best platform for gaming on Linux. I don't think anyone expected it to run so well with virtually no performance impact.
Now with the Fex project, it might end up that running Windows games on linux on a modern ARM processor could be the best way to game going forward, especially for mobile platforms like the SteamDeck.
The best gaming experience are Switch, PlayStation, XBox, iOS, Android, the very definition of everything just works, and no kernel drivers to worry about.
You just listed concrete hardware (with the exception of Android). That's a category error, of course a fixed hardware with specialized software will have less inconsistencies.
You would be happier if I listed the respective OSes instead?