You said it yourself, "fuck snap." But Snap is the default for a bunch of things. There's probably someone else saying "fuck flatpak." The user doesn't win this way, it's not a feature.
Snap is Ubuntu and derivatives only which is a respectable but smaller segment of the options.
It's also a fucking system daemon that runs in the background. Avoid.
Flatpak is available on every distro.
Snaps are a Canonical thing and is only used by default on Ubuntu and distro's based on Ubuntu. No other distro uses or recommends them.