Comment Xfce also uses GTK (Score 1) 123
I am relieved to note that Ubuntu is NOT Wayland only. It's just that the latest Gnome only supports Wayland. So all I have to do to keep X11 available is not use the desktop environment that I despise anyway.
I've read that dropping X11 in favor of Wayland goes beyond GNOME and reaches all of GTK. This means developers of other GTK-based desktop environments (particularly Xfce) and users of distributions built around those environments (I have Xubuntu and Debian Xfce in mind) will have to make hard decisions.