I see people complain about "the" UI in linux distros all the time. I don't understand. Ubuntu itself has several options- LXQt, xfce, kde and Gnome. I've used

I see people complain about "the" UI in linux distros all the time. I don't understand. Ubuntu itself has several options- LXQt, xfce, kde and Gnome. I've used xfce as my desktop for the last decade or so, before that it was fluxbox/blackbox, and before that enlightenment. Looking at other people's screens at FOSDEM there's till plenty of choice in UI