Ubuntu is not even good in my opinion. At least not as a normie Distro.
Yes they have lots of docs online but "it is good because people think it is good" is not a good argument.
If you dont like GNOME I guess you will have a harder life anyways, as Distros with KDE are just a really hard task. Like anything stable is not a good idea, I at least reported 30 bugs that will never get backported fixes.
The fact that appimages are broken on Ubuntu is like the only thing that I completely understand and dont care about. Appimages needs to get their stuff together.
I hope many projects will convert from Appimage to Flatpak