It's been well known for awhile now that it's his preferred setup.
He seems to want as much stability as possible; while being as minimal as possible; with as little fuss to install and keep up to date as possible. Fedora meets those needs. Gnome is Fedora's main concentration.
Indeed. In fact, only recently the Fedora KDE version was elevated to "Edition" status and is now on the same tier as the Gnome version.
Most newer popular distros (Bazzite, CachyOS, Zorin, Asahi, etc.) default to KDE now, and it's very nice that Fedora's not only keeping up, but also providing the basis for some of them.
No worries. I started using Fedora around the 4-5 timeframe and am still using it 40 editions later -- time flies. To my memory, it's always been GNOME-first.
He seems to want as much stability as possible; while being as minimal as possible; with as little fuss to install and keep up to date as possible. Fedora meets those needs. Gnome is Fedora's main concentration.