Seeing this title, I immediately felt this is the best (unintended?) clickbait title of HN today. "What? This must be wrong!". I just had to click, especially that the article is on gnome.org. I thought I really missed something serious.
Turns out, GNOME is not the default desktop environment of Fedora Workstation because the team considers that GNOME is the desktop environment of Fedora Workstation, anything else is not tested / supported.
All right, I missed nothing noteworthy after all.