Disagree.

You need this amount of control to be able to properly filter and secure things. Wayland actually learnt that from X security extensions failure.

To me, Wayland failures are more on the organisational and change management part. In inside, it would probably have been better to provide a core library rather a reference implementation. Also, a lot of pieces needed to fall into place once the ball started rolling and some of them like PipeWire took quite some time to be ready.

The sorry fragmentation and complete unwillingness to work together of the various Linux DE also didn't help. I think Gnome constant NIH syndrome and overall capture of Freedesktop has a lot to do with where we are.