This again leads to the conclusion that they did not understand what a distro is about. Of course you want to support all the packages / desktops that come with a distro, not just your preferred set of packages. In fact they are actively destroying other parts of the distro with that.
Instead they should just offer a PPA repo with their modifications / addons - but much better would be if they just fed their changes to upstream instead of pretending to release a whole distro when in fact they just release some packages and maintaining the whole thing is way too much for them.
That leaves a bad taste. It is not clear why they need to release their additions and modifications in such a way, but for me as a new Linux user it was one of the most interesting revelations that I could (un-) install several desktop environments without any problems, this was a huge learning motivation.
So unfortunately this POPOS thing must be declared as a "false" attempt on how to distribute software for Linux. I still would recommend Ubuntu for newcomers, but teach them that several problems that might come up still exist - that is the price for software freedom you have to pay. Still snaps are not a real problem for many users and I understand why they exist, but personally find them horrible, too.