IDK about copyright, but the amount of times they refer to themselves as "Windows Ubuntu" feels like it's probably trademark infringement. A reasonable person could easily read this website and mistake it for an official MS product.
damn! that is quite the impressive windows veneer going on there. did not know about this distro (and I find the win 10/11 UI to be a whole lotta "meh", so not personally interested), but I am sure there are others who would be. interesting link to throw, hand grenade style, into a distro flame war.