If a distribution like this already exists, I'll gladly take a correction, if nothing like it exists consider the following then:
We have Linux distributions actively blocking Canonicals snap and snapd, due to both the closed off, user-hostile, and vendor locked nature of snaps. How easily could a Linux distribution thrive if it actively refused packaging or outright blocking Gnome, KDE, and Wayland in general? I don't mean blocking packages and libraries that happen to support Gnome KDE or Wayland wholesale, but just the desktops/compositors.
Starting with why anyone would block Gnome and KDE:
A) Unpredictable design and increased reliance on systemd
B) Insufferable upstream who act like rotten cunts over reasonable QoL feature requests
As for Wayland being something a distribution could refuse to package:
A) Atrocious lack of accessibility tools which Xorg/Xlibre provides
B) Insufferable upstream who act like rotten cunts over reasonable QoL feature requests
EDIT: spelling.