But this is sort of the nature of the problem?

In X11, the problem was Xserver. Now, X11's design philosophy was hopelessly broken and needed to be replaced, but it wasn't replaced. As you correctly point out, there is no "Wayland", Wayland is a methodology, a description, of how one might implement the technologies necessary to replace X11.

This has led to hopeless fracturing and replication of effort. Every WM is forced to become an entire compositor and partial desktop environment, which they inevitably fail at. In turn application developers cannot rely on protocol extensions which represent necessary desktop program behavior being available or working consistently.

This manifests in users feeling the ecosystem is forever broken, because for them, on their machine, some part of it is.

There is no longer one central broken component to be fixed. There are hundreds of scattered, slightly broken components.