I wouldn't go that far. Most distros have switched to GNOME on Wayland by default, and Fedora 34's KDE spin has switched to Wayland too. Sway is niche but not i

I wouldn't go that far. Most distros have switched to GNOME on Wayland by default, and Fedora 34's KDE spin has switched to Wayland too. Sway is niche but not insignificant anymore (I use Sway). X11 is definitely not dead yet, though. FLTK programs, Wine, and some game engines still require X11.