> Windows has just as many "any WM," No. It doesn't. Windows has one GUI and various themes for it; Ubuntu has multiple GUIs. That's what a WM is in Linux term

> Windows has just as many "any WM," No. It doesn't. Windows has one GUI and various themes for it; Ubuntu has multiple GUIs. That's what a WM is in Linux terms: A whole new GUI that sits on top of very basic graphical primitives which don't determine anything about how a GUI looks or works.