i always disliked gnome 3 because of the user interface (it seemed to be an amalgamation of all the bad things from os x or even macos), not because of the underlying language it's coded in.
I don't speak for everyone, but GTK3 is the unofficial "native" toolkit for Linux. QT isn't far behind (I've been using Plasma since GNOME 40 and it's a blast), but GTK3 just feels... right. Also licensing and custom stylesheets yadda yadda yadda.
I do still like certain aspects of GNOME, but I worry for their future under the current leadership.