I think that you are right about not depending on one open source OS to provide the proper depencencies, customizaion, and training wheels for every app. I have been running linux on my desktop for about 20 years, about one decade of Mint followed by the same of Fedora so far. Being a curious but fussy guy who installs lots of software to see what works, I find that I need to install a fresh OS about every 18 to 24 months.

There are, I suppose, always a few programs that don't get upated by 'sudo dnf update' but do get bothered by updates to the shared libraries via the same. Perhaps there are some config files that get damaged by software bugs or power outages or system crashes or my own mistakes and carelessness. I also found out that if one loses the dnf program, one will discover just how impossible it is to pull oneself up by oneself's bootstraps.

Mint was a very similar situation. Maybe not so bad for one who follows all the rules, but in those bygone days there were people suggesting that updating Mint programs with newer versions fron the ubuntu or debian repos was a good idea. And because Mint was slow to get updates, I would attempt to update some apps by downloading source and building and installing here.

Last year, when I upgraded Fedora from 39 to 41, was the first time I got any OS upgrade to work instead of wiping the disk, doing a fresh install of the new OS version, and then spending a week or month trying to get my data for the installed apps (eg web browser and email) from backups. But the upgrade took much longer than it should have, because once I started running the upgrade process, I did not know that the computer sitting there dead silent with no action on the screen for about 30 hours was a sign that all was going well. Computers are evil.