Earlier quoted context omitted.
Wine has worked surprisingly well for a long time, well before Valve got involved, although compatibility was never perfect of course (and still isn't!) I don't think they had to "fix 1000s of tiny little bugs that break games". Codeweavers has been selling commercial Wine-based solutions for a long time. It's easy to offer a better experience if you also own the actual storefront; that was kind of my point. And as I…
I used wine for many years. "Semi-usable half-working project" was entirely my experience; nearly everything I tried to run had at least one weird bug. The proton work is open source (and readily installable without using the storefront), so you can actually just look and see that they did, in fact, fix many little bugs that break games - perhaps only many hundreds, rather than thousands.
last time i tried that, i could not figure out how. any pointers?