I don't run Gnome now (since I have more fun hacking on Sway), but I really don't think that the characterization of it being a "tablet desktop" is actually very fair. I found Gnome to be very productive, and actually extremely keyboard focused. Outside of a tiling window manager like Sway or i3, I actually have found it more keyboard-centric than any other desktop I've used.
The reason I am harping on keyboard is because to me the keyboard is the signature differentiator between "desktop" and "tablet".
I feel like everyone hated on Gnome because it was different. They tried it for ten minutes, didn't bother trying to actually learn how to use it, declared it as "shit", and moved on. I was one of those people.
It wasn't until I decided to stick with Gnome for a few weeks (using the Antergos distro of Arch) that I came around, and now I find it to be the most productive of the "normie" desktops on Linux.