Willy- you seem to have missed my point. I'm not assuming that kicks are coming from any place in particular. I'm saying that I don't understand why we only practice one way, given that neither way provides any particular advantage.
And I don't think that Don was saying that Karate's rooted stances provide any inherent benefit over and above what anyone does when they're trying not to be thrown. They're just better than the alternative of punching by throwing the top half of your body forward in a way that just says "throw me now!"