No. People with gender problems have had their penises cut and cross-dressed for millennia now.
As for the link: That's sick. Is this real?
I'm for gay marriage, not gay adoption. Still, it's hard to talk back to people who say gay parents are not going to influence the child's sexuality. I never know what to say, but I always try to convince them that it would not be healthy for the kid.
Saying that there were studies saying that it doesn't does not convince me, since gay adoption is not permited and there would not be enough subjects to test.
So I see people using irony a lot to escape having to explain this.
Of course, they are going to say that boy was already the way he was, and having those lesbian "parents" was a coincidence... We'll never know.