So my TLDR, is that its possible to be a USER without touching the terminal, but I dont think its possible to be an administrator without.
Suse with Yast makes it possible to administer just with GUI. Not 100% sure if it can do absolutely everything possible but it has lots of tools.
Just because something was last updated last year doesn’t mean they aren’t up-to-date. Not all software need constant updating. It’s an illusion that software must be updated constantly. If it’s feature complete and there are no known issues with it why bother.
Kdenlive is software I’ve seen recommended for video editing.