They write in Finnish in other comments, but I don’t seem to be able to confirm or deny the law there, at least not with a quick search.
I did find an article that suggested that it’s been ruled legal in Italy, but only if you’re homeless and hungry. I can imagine that if you tried it and had any assets whatsoever, they’d find a way to put a lien on those assets rather than let you get away with it.
You do realise that even though it’s not one of the official Mint variants, it’s still possible to install Gnome on Mint with minimal fuss?
There are people that still install and run KDE and that hasn’t been a Mint variant for some time now.
Or are you saying that Gnome should be the default variant because it’s “modern”?
The monkey’s paw curled a finger when they took off in that direction. Most old Linux/X applications will run fine under any window manager / desktop environment and, by and large, inherit the look and feel of that environment. Modern Gnome apps say “no” to that and look like Gnome apps wherever they are.
Since the Mint team are forking Gnome apps precisely to avoid that behaviour, I’d say Mint isn’t going to adopt Gnome proper any time soon, but as I said, you can install it if you really want.