Context: X11Libre is a fork of X11 aiming at preserving the X Server (fair enough, right?). One of the creators got permanently banned from freedesktop.org for apparently violating the Code of Conduct (no info on that, they just blame Red Hat), see themselves as hunted by both Big Tech and “toxic elements” who “took over the X11 project” They want to “make X great again”.
The issue about their highly political README (which they wrote due to the original project “becoming too political”, lol) also contains the usual red flags like transphobia. https://github.com/X11Libre/xserver/issues/40
To be fair they made a lot of strides to the point where config file wrangling went from mandatory to almost never done.
But yes, Nvidia would have quirks driving people back to wrangling config file, but they got better too.
Though I’m not particularly interested in X11. The biggest thing they had was trivial application forwarding, but the architecture didn’t scale well to modern resolutions and UI design that was largely bitmaps being pushed, as well as not handling higher latency networks too well.