What Mint install did you have that had that many issues? Installing apps has been easy for a long time already, just open the app store and pick what you need. Updates is the same thing: app store > update. Whenever something breaks for some reason, there are auto-created rollbacks on the boot menu. My partner is far from being a techie and they managed every daily operation without needing help from my part.

I think we had vastly different experiences, probably because of hardware or release differences, but I never saw the kind of issues you're commenting :/