> Wayland is now as old as Xorg was when wayland started because X11 is "old and crufty" and still not usable.

How is this comparison supposed to make any sense? When Xorg started it was a fork of the existing XFree86 codebase (due to XFree86 changing license to one not deemed open source compatible), not starting from a clean sheet of paper. And XFree86 in turn wasn't a clean sheet implementation of the X protocols either, it IIRC started as a bunch of patches on top of the reference X11 codebase which goes back to the 1980'ies.

this is counting the xfree86 legacy. That one was started in 1991 and 17-18 years old when wayland was startet in 2008 which is now 18 years ago. Counting the time before xfree86 doesn't make much sense. While initial implementations of X where older than that, those early implementations don't really have much in common with todays Xorg. And the problem is, that wayland is still much less mature than Xorg was when wayland was started.