I grew up with a kid that we all knew was gay from a very young age. Whenever we would play superheroes this boy wanted to be Wonder Woman. He had a jump rope that he pretended was his magic lasso. His Dad was a Southern Baptist, a baseball coach, and an avid hunter. His brothers both played all kinds of sports including football, wrestling, and soccer. So I'm pretty sure it wasn't environment that made this kid the way he was.
My point in all of this is everyone is different. I don't understand the challenges that a family would face in dealing with a kid like the one in the article. My instincts tell me that it's silly and that he is too young to make such a decision and he should be made to act more like a boy until he's older and can make such a drastic life decision for himself. However, I haven't been through what they have, so I really can't say for sure that they're not making the right call in this. Time will tell in this case I suppose.