The diversity of Linux distributions is one of its strengths, but it can also be challenging for app and game development. Where do we need more standards? For example, package management, graphics APIs, or other aspects of the ecosystem? Would such increased standards encourage broader adoption of the Linux ecosystem by developers?
So this is why multi monitor support has been a never ending hot mess?!
Yes and no. It would solve some problems, but because it has no (non-hacky) graphics acceleration, most DEs wouldn’t use it anyway. The biggest benefit would be from not having to use a DE in some circumstances where it’s currently required.