> We are still fixing stuff in Wayland, stuff that Microsoft and Apple had figured out 20 years ago.

I don't know, given that the UX situation in Windows UI - itself a inconsistent disaster that makes the disjointed things that make up KDE looks like a consistent desktop experience. They can't decide what UI framework to keep supporting, they keep changing what you're supposed to use to build your GUI every bunch of years.

As for the Apple side, well, destroying everything every few years with almost no regards for backwards compatibility isn't "figured out 20 years ago".