Appimages do not have repositories, unlike Flatpaks and Snaps. It’s harder to install or update them since there isn’t a package manager for the Appimages.
I don’t know about Snaps, but Flatpaks are sandboxed, which basically means more security, since apps won’t get access to your system without permission. It’s kind of like Android where apps have to ask for permission to things like camera access, filesystem access, etc.
While I do use Appimages, they remind me of Windows and having to go to websites to download stuff.
Personally, I prefer just installing software with my distro’s package manager and resort to Flatpaks or Appimages when it’s not available in the repos.
literally 2 days ago i tried installing gentoo in a vm but gave up because it would take too long to compile… and now this??? guess my timing was pretty bad
if i did use gentoo, i’d probably compile smaller programs from source and bigger things like kernel and web browser i would use as binaries.