Technical stuff aside, a major reason why Flatpak does not get the hate Snap does is because users don't resent it.

There are 2 things people hate: the way things are, and change.

Ubuntu put Snaps on users desktops without asking if they wanted them. They just did it, then closed off ways to opt-out/avoid them (Cf. Firefox).

Forced change fosters resentment.

No distro made Flatpaks default/required/opt-out. Users had time to come to the tech and adopt it on their own terms/needs.

Just IMO.

@omgubuntu My experience with snaps so far is the following:

* Stupid syntax: to update something it’s not "snap update", it’s "snap refresh". Why.
* Snap counterparts to .DEB packages have lesser quality. MuseScore? Stuck to version 2. Steam? You have to mess with the permissions in order to connect to your account, only to see that this version doesn’t handle well games stored on NTFS partitions.