It's great that Gnome has its own UI paradigm, it's boring when every desktop looks and behaves the same by default. That's neither innovative nor much choice. I think the Gnome UI paradigm is great (and I've used it for quite a bit, so I know it's good when you're adjusted to it), there are however some bad aspects of Gnome which mostly have to do with the project behind it and how they tend to be less interoperable than the other desktops/compositors and focus on their own things a little bit too much which might have some negative consequences for users who don't just use Gnome-based applications. I don't remember specifics but there was some justified drama about the way Gnome handles window decorations for example. These are things that the Gnome project should be working on. They shouldn't be working on making the default look and behave more like the Windows desktop. That's unnecessary. If you want a Windows-like desktop simply use one of the many other ones which look more like it by default.