This opinion is what’s holding Linux back. Having a clean and pleasant user experience on top of a stable Debian based distributed is the goal.
What all of these distros want to be is a basic configuration script. What they are is a nightmare for every user, since the user is now in the hands of a few people, who as a hobby are maintaining his OS and occasionally will break it.
It is so bizarre that so many people want to make distros, when they are completely unequipped up do so.
Given the fact said distro is based on Ubuntu LTS there is very little to maintain except a set of themes and desktop customisation and default choices. The long support cycle makes it that the Zorin team is not facing major changes so often as they keep the same Gnome version for a long time. This is a perfectly decent sokution for people who do not feel the need to stay current with the latest version of any given desktop at all time.
The answer is the same.
This pretty much describes LMDE[1].
That may be the goal for you personally but it certainly isn't the greater goal of Linux as a whole.