Main reasons I see being raised a lot are Canonical's absolute control over the snap ecosystem and the dependency problem inside the snaps, meaning they often ship outdated versions of dependencies which might have known bugs or flaws.

The fact that it is forced on users is mentioned by other people here already. Afaik this is not a thing yet on Ubuntu server, so maybe install that one + the GUI packages? Not an Ubuntu user myself, so this could be oversimplified.