XLibre exists simply because you can't just "force X11 to die" (Xorg's strategy) for as long as someone is willing to work on it.
Now, there is a group of people who actively hate on XLibre sorely because it pretty much derailed such a plan.
These people (who are no doubt sick in their heads) should focus their energy on improving Wayland rather than running hate campaigns on XLibre and its developers.
Majority of the community does not care about XLibre or its developers. They are free to work on whatever they want, but the ship has sailed and no one is coming back to X11 except some fringe groups which always exist.