Its like the Epic Games Store supporting Linux, or [any website] supporting dark mode. You'd think its an easy to implement bare minimum that everyone asks for, but its like pulling teeth to actually get it done.
At least with dark mode, you can ignore most web developers and get a browser extension to make everything dark, then only webmasters who don't follow standards gets it wrong.
In any case I don't see how this is materially different from Windows where it's the norm for every game to ship its own libraries and install various redistributables to function.