You must not have heard very many, then. I've seen a number of criticisms that focus on things like the fact that Bella and Edward are in what is pretty clearly an abusive relationship, and yet that relationship is lionized as True Love For The Ages, which is an absolutely awful role model for the young women who are the book's core audience. It has nothing to do with jealousy or resentment; it's a perfectly valid criticism of the book's central relationship. And that's just the most obvious one I can think off of the top of my head.
Given all of the books subject to similar criticisms, and what it says about the criticizer's view of the reader, you still have to explain why those criticisms appear with such vehemence with respect to Twilight. And I think Shockley is on the right track.