Or the BSD guys can implement the required infrastructure and bring their kernels to the modern era, instead of requiring userspace programs to hack around their lack of features. The only people giving the BSD guys the finger is themselves.

The problem is that the only documentation for the "required infrastructure" is the Linux source itself which is constantly changing.

I doubt that the BSD infrastructure has to match the Linux infrastructure exactly for the Wayland protocol to work on it. Mostly what it has to do is mode-setting in the kernel, enable sharing of graphics buffers between processes, and allowing libkms and mesa to work on top of it. The exact kernel api shouldn't matter for most applications.

X is rapidly becoming a system that only works well on Linux.

No, X works just fine on other platforms thank you very much.

Now GNOME and other things are a different story.

AIUI X on FreeBSD depends on HAL, X support for which is now deprecated? I haven't had any trouble yet, but I'm worried.

Try using a recent model AMD graphics card, you will only get hardware acceleration when running X on Linux.

That's a driver; has nothing to do with X itself.

Consider that the nVidia driver works on Solaris, FreeBSD, and Linux. Therefore accelerated X works there as well.