Nearly every Wayland compositor is built on wlroots. Somehow they manage. But yeah, of course it's going to change more than X11, which is older than I am and more or less abandoned...
It's actively maintained by projects like RHEL which still have versions which are supported which in turn support X11.
Others are looking to run X11 wm under wayland with wayback, xlibre wants to keep it moving forward, and phoenix wants to replace it with a modern version.
