Well, I’d file this as innovation. Innovation is trying and failing. It’s an experiment. And I’m okay with this.
Is it wasteful to have KDE and Gnome? Why don’t they give up and merge with each other? Did we really need systemd? Or docker? And why Wayland when every single distro is on X and every single application is on X?
Ubuntu started as a Gnome-based distribution and it is was better than the competition on the desktop at the time. Or good enough. It got popular.
Personally, I wasn’t a big fan of Unity or Gnome 3, but it worked. I found snap totally weird and against how things should be on a Linux system. But snap updates (while still annoying) have solved problems with deb-based updates of browser (“Quit all running firefox or you’ll experience problems”).
Maybe I’d like Debian more. After all I came from Debian to Ubuntu. But it’s not worth to make a fuzz.