Well, that's highly debatable. The fact is, that nature gave him a man's body with man's sex organs for reproduction with a female. So, it's indicative that he did make a choice somewhere down the line to be gay
. Generally speaking, though, you'd be hard-pressed to find many American parents who'd be accepting of their children coming out of the closet. Religious notions aside, most people in the U.S. just aren't progressive in that regard - and even the mother's reaction (as distasteful as it was) was more of a reflection on the culture than anything else.
Yeah, the mother reacted horribly. But, I also kept thinking that the son was such a d*ck-wad, to secretly record and publicize a personal confrontation with his mom on YouTube. What she said could have been in a fit of anger, and I'd find it hard to believe that any parent could easily disown their own flesh-and-blood child on a whim.