kc9udx OK, here's the problem (it was horses after all and not zebras):
-r-xr-sr-x 1 root wheel 3041272 Jan 23 2021 /usr/X11R7/bin/Xorg
The binary is set-gid to wheel
, not set-uid to root
like it ought to be. This should fix your problem:
sudo chmod 4511 /usr/X11R7/bin/Xorg