I like user respecting operating systems, that is the deal breaker.

If you insert snap into apt package management, so that you can go behind the user’s back, re-enable snap and install a snap anyway if a user tries to apt install firefox, you don’t respect the user’s choice. It’s the kind of thing we give Microsoft shit for.

And yes I know it can be worked around and disabled and whatnot by jumping through various hoops, but that’s beside the point. As a matter of principle, I will just use something that doesn’t do this. KDE on Debian works just as well as Kubuntu anyway.