X disappearing from the face of the earth would be a great thing for wayland, because people would be forced to fix the remaining issues.
I’ve seen this happen multiple times with replacement systems: as long as people can escape back to the old system the new one remains rough around the edges, but once the old one is turned off the new system rapidly improves to production level quality.
The issues can’t be ‘fixed’ in the Wayland protocol, but have been addressed by individual compositors and libraries like wlroots. The difficulty is not in building a decent Wayland desktop from scratch (GNOME, Sway and ChromeOS have all done this), but in rewriting X11 window managers, screen sharing apps and automation tools that perform functions that are the compositor’s responsibility under Wayland.
I’ve seen this happen multiple times with replacement systems: as long as people can escape back to the old system the new one remains rough around the edges, but once the old one is turned off the new system rapidly improves to production level quality.