Gnome 3 has made the user-experience a disaster. But even worse, it took away or made it much harder for a user to fix that disaster, even when willing to invest time to fix it. Because, you know, the Gnome3 developers just know so much than all their users what the users want and need.
So they decided that it is really not good for us to have task bar any more, or to have shortcut icons on the desktop or have shortcut icons in the panel, or have the panels organized like we want, because doing it all like they figured out some noobs want to do it is obviously the only road to happiness for us all.
And they were so busy taking away the freedom of their users they could just not be arsed to work on important stuff like e.g. proper support of HiDPI monitors or multitple monitor configurations with big differences in DPI.
The same applies, probably even more, to the Unity team, btw.