[eropple]

> maybe KDE and Gnome have some specific incompatibility though

It's a layer down from the DE itself, it's the window manager beneath it. GNOME ships Mutter and KDE ships KWin. GNOME is pretty tightly tied to Mutter; KDE is less tied to KWin, but KWin also tends to support shinier features than Mutter does anyway so I don't know why you wouldn't use it anyway.

> It seems like a somewhat odd observation, is it really necessary to have another user to do this?

Strictly no, but having to have another login session, period, is bonkers to me. It's reasonable to respond to that suggestion with incredulity.

> If Gnome is a hard requirement, how is Windows even a candidate?

For me, it's not. At the moment it's inertia, because Windows has legit become the best Linux dev environment I know of with WSL2. I originally switched back to a Linux desktop because I was working on some hardware stuff that benefited from being on a Linux platform, but I'm certainly not tied to it past that.