My last Kubuntu update (to 22.04) broke because, I think, I'd disabled snaps and the update required snap installs (including Firefox). The update had a "install snap version of Firefox" stage with the only option being OK/Yes ... so install broke. They were so up themselves that they removed the option to cancel snap install despite it not being for essential elements of the OS; I had to kill them installer.

My first brush with fat-packages was Digikam stopping producing .deb packages, it put in so much overhead I couldn't run it on my (admittedly weak) system. The forced use of Firefox snap lost configuration, then failed to work properly (permission problems) ... it's like how the use of file managers via sudo was stopped, seemingly without a proper plan to replace it; make the new tech first, then implement it when it works! It's like going back to Windows, having fragmented app sources and forced updates that wreck everything.

I'm not sure where to move to next, I came to Ubuntu years ago because I no longer wanted to do the config work necessary to run Slackware. Looks like Mint/Arch/Debian are contenders.