I remember on another episode with a redhat affiliated guest that there was a usability test with gnome and a group of people were asked to use it and compare workflow to other desktops. Just seems over-biased.
I bet if I were to run a similar test and compare gnome to plasma or even xfce, either would win because the user actually has a choice to customize it. I think some group not related to redhat should take over gnome because redhat is so strict in its desktop design to the extreme.
No other desktop is this strict in setup and design