KDE is useable now that I can use AI to deal with the thousand cuts.
TBH I was rather shocked at how bad Kubuntu is out of the box:
* Hibernate is flaky
* The OS freezes from time to time requiring a hard reset
* Snaps completely bork the system - better to just uninstall snap
* Keyring is flaky. Often you get stuck into an "enter your password" endless loop.
The list goes on - and this is on a desktop PC! But fortunately an AI can sift through the arcane workaround lore in the various forums.
The bugs are annoying, but a helluva lot better than using Gnome!
Do not underestimate the importance of the distribution. Debian 13 is great, fedora too. Ubuntu snaps are a plague.
Kubuntu has always been mostly a one-man effort, and that one man very publicly burnt out after getting somewhat shafted by his work colleagues.
I believe one should use "KDE Linux" as the reference implementation, nowadays.