Well...........there are a few who aren't. Unfortunately, those are not the ones that are heard from. To hear from them, you must read AFA or articles like that, from the traditional values side.
I'm sure there are exception that make the rule, but the association is pretty dysfunctional. They study broken people to learn how people work (I know, there are good reasons to do so), which is like studying broken cars to learn how cars work.
I'm sorry, I could go on and make a better case, I just don't have any of my old materials with me.
You gotta admit though, they probably did not have any good reasons to make this recommendation beyond political correctness and acquiescence.