X11 has been, and still is, a vital piece of technology at the core of professional Unix-like workstations since decades. It has a proven track record of supporting enterprise-grade applications with long-term protocol stability and platform compatibility. It has matured over decades. XLibre is an actively developed fork of the X.Org X11 server, initiated by the most active X.Org developer and supported by the open source community.
An incompatible alternative, Wayland, is being aggressively pushed by IBM = Red Hat = Gnome = Fedora = freedesktop.org. However, it is not ready to succeed X11 as it its governance model leads to never-ending discussions and prevents even the most essential functionality from existing. Think twice before abandoning Xorg. Wayland breaks everything!
It is time that the open source community reclaims what was ours to begin with. This page lists distributions supporting XLibre so that you can make an informed choice.
--> Table has moved to https://github.com/X11Libre/xserver/wiki/Are-We-XLibre-Yet%3F <--
If manpower or skills issue are the only reasons of not including xlibre into a distro, and distro maintainers really want it, they can just ask for help (donation?) or seek for other maintainers, maybe someone are willing to take that role. If that still not work out, or because of some technical issues that cannot be solved (xlibre beta?), or other reason, I think it would better explain it in detail, and most people will understand.
But if they just filtering and only focus on the badmouth on the internet, use it to victimize themselves in the first place, I think it is clear that they just don't want it to be included in the first place. Maybe they already made their decision for whatever reason but don't want to talk about the true reason because of the current situation and political concern. Maybe not including it because of BigTech pressure (cut funding/support?) or other reason? I don't know.