Although colleagues have earnestly described why they like GNOME, and demonstrated it, all I see is people who don't know how to use the existing, 35+ year old keyboard UI of Windows, or the simpler and only a few years younger one of NeXTstep/macOS.

I can't stand GNOME myself. It doesn't get out of my way. It wastes a tonne of precious vertical space on its wasted panel. Its app-switcher is poor. Its window management is atrocious, but then, I've met with and interviewed the dev team, and they don't manage windows. They switch between full-screen sessions instead. I'm looking at twin 27" screens right now, and I want to see 5 or 6 apps at once. GNOME obstructs that massively.

But it's trivial to configure macOS to be as minimal as GNOME. Dock to autohide, cmd+space for the app launcher, trackpad gestures to hop between full-screen apps. It's not how I work or want to, but it's easily achieved.