I don’t recognize this myself. I’ve never had trouble with incompatibilities or degradation etc.,
Especially these days my OS can remain very vanilla, as many complex things can be containerized. E.g. I run syncthing and an nfs server and sometimes torrenting over vpn, through docker-compose; I’d never install all that on the host with all the extensive dependencies. Same with some heavyweight apps like darktable - spin them up from Flatpak.
Ubuntu does it very well with minimal fuss. I see little to dislike.
Is it though? I’ve found it rock solid for years on end - been using it for 14 years, and Debian before that.