I avoid Ubuntu because Canonical has a history of going their own way alone rather than collaborating on universal standards. For instance, when the X devs decided the successor to X11 needed to be a complete redesign from scratch companies like RedHat, Collabora, Intel, Google, Samsung, and more collaborated to build Wayland. However, Canonical announced Mir, and they went their own way alone.
When Gnome3 came out it was very controversial and this spawned alternatives such as Cinnamin, MATE, and Ubuntu's Unity desktop. Unity was the only Linux desktop, before or since, to include sponsored bloatware apps installed by default, and it also sold user search history to advertisers.
Then, there's snap. While Flatpak matured and becoame the defacto standard distro-agnostic package system, Canonical once again went their own way alone by creating snap.
I'm not an expert on Ubuntu or the Linux community, I've just been around long enough to see Canonical stir up controversy over and over by going left when everyone else goes right, failing after a few years, and wasting thousands of worker hours in the process.