I can't believe people like Snap when in the name of security it breaks basic things such as accessing a folder on a different mount point that the user normally can access perfectly fine.

A packaging system should not break the basic abstractions of an OS.

Yeah, this was the frustrating bit to me. I use Firefox to look at stuff that lives in /tmp/, Snap Firefox can't do this. I'd remove Snap Firefox, pin the priorities and it would still silently crawl it's way back in after a week or two no matter what I tried. I gave up Ubuntu. Earlier versions used to respect the priorities but something changed.