Ubuntu changes the entire underlying technology too often cause they always try to introduce their own system in place of something that’s already established (Upstart, Unity, Snap, etc.)
My last experiences with Ubuntu were one upgrade that failed to boot after following all the recommended steps, one upgrade where the release notes themselves recommended a fresh install to enable all functionality and a fresh install where the first thing I saw after booting was an error message by Gnome about a crashed service.
I left the distro after that and haven’t looked back. Admittedly, that was quite some time ago. It’s likely they’ve improved since then (but so have all other distros).