[yjftsjthsd-h]

I go back and forth on this kind of thing; if the better option really is EOL, is it better to keep using it until it actually breaks, or is it better to take the pain up front? I don't have an actual answer in the general case, but on the bright side Xorg is still not dead even though the pro-Wayland crowd says so at every single opportunity; it has a nonzero number of maintainers, gets commits on a slow but regular cadence, and appears likely to continue working for the forseeable future. If we assume for a moment that the X server will really actually die when Red Hat stops maintaining it (questionable; the BSDs appear more attached to it than RH), that merely gives us until the end of RHEL 9 around 2032, which is far enough away that I feel comfortable not worrying about it.

Also, as sibling comment points out, a simple solution exists in the form of rootful xwayland; we can keep a working X11 environment and just swap out the actual rendering layer.

Or put differently: "Given that X11 is going away, the server (except for Xwayland) is unmaintained," just isn't true, and even if it was it wouldn't necessarily justify the claims you make on that basis.