What do you mean by that? I haven’t used Ubuntu in a long time. I know a lot of people dislike snap packages (for valid reasons, imo) but that’s about it
Snap is a very central component of Ubuntu nowadays and it looks like Canonical is trying to make it the new standard package manager. It's a very long and messy transition. They also keep trying to serve ads on the commandline, e.g. recently they tried to push some kind of subsciption service by saying something like "you could get these updates, too, if you were a subscriber" when you're updating on the commandline.
There's pretty much a neverending string of changes that leave a bad taste.
(disclaimer: Ubuntu is still my main OS. Reinstalling is kind of a PITA ...)
Another thing, you can get like 5 licenses for free (for personal use), but I understand people not wanting to have to do that in the first place (but free live patching is pretty cool).
Ubuntu was weird and unatable for me so I went to Arch. Expecting it to be more weird and unstable. Turned out to be the most stable experience I've ever had.