Snaps are significantly safer for users and easier for publishers to produce. The styling issues and so forth occur because of a security-first mindset. [Disclaimer: work for Canonical, but not on the Snapcraft team]
I would believe you here if snap was not an auto-updating system. This is about the least security-first mindset that it can be; it has a single, gaping, point of failure, after which an attacker may get hold of millions of user's computers without action by their part.
As a user I do not care about publisher's convenience. They should solve their own problems without making users the victims of said convenience. As for "safer" - I'll buy this argument when you get rid of slow startup, bloat and other problems associated with snap.
