Sure, but that wasn’t malicious code hacking your device just a simple phishing scheme. The aur runs arbitrary code each time which can do quite alot more on your system than any snap. That snap was just a fake app that sent your login to their server.
The aur is much more dangerous. Of course, when installing anything from anywhere be careful, but with the aur you need to be able to read the pkgbuild.
Thank you though for cautioning the snap store as you’re right. Those apps aren’t confirmed before they’re placed on the store
The issue with that is potentially keeping software which has security bugs on your system for longer than needed. Also, if you install new software you’ll have a partial upgrade which can degrade your system. If you don’t install anything though, your system should work as it currently does without issue. Unless a particular app takes something from the internet which may need the upgraded software (say, discord, spotify, etc. as they’re electron based.)
If that’s what you want to do I would suggest switching to xubuntu, mint xfce edition, DSL, etc. as they’ll still patch security updates in. You do you though of course as with your stated usecase I can’t see any functional issue. I don’t see the reason for arch though.