> Proton isn't Wine.
Proton _is_ Wine. Fixes in Proton get upstreamed into Wine, and Valve hires developers to work on Proton, Wine, and Mesa. Wine isn't in the dark ages anymore and is able to run the majority of things you throw at it confidently and capably.
> but it won't help with users downloading the Epic Game Store or GOG or the Rockstar Launcher.
That's... why we have Lutris? You literally cannot shake a stick without coming across those. Even just typing "epic games on linux" into google and being a dumbass that reads the AI overview, it will tell you that Heroic and Lutris exist: https://i.imgur.com/KBiw1cR.png
After that, you just click some buttons that are clearly marked and wait for things to install, and it just works: https://i.imgur.com/XUFJaUu.png
To be clear, I literally just did this because I wanted to try Fall Guys on my laptop with an aggressively underpowered graphics card. It took only minimal intervention from me (clicking "install" and "next", and then logging in to Epic).
It's not as seamless as hitting "Install" on Steam would be, but if you're able to mod games on Windows (i.e. "follow instructions") you're more than able to deal with the state of gaming on Linux in the present day, and in many ways it is somewhat easier than Windows with the way Linux handles software upgrades.