Okay, call me a grouch (like my avatar), but this is the sort of stuff that rubs me the wrong way. I really couldn't get through the linked article.
For me, it has never been a battle with transsexuality. Transsexuality (that is, being by nature more like what society deems women to be than men) has never done anything bad to me. Most of my misery and psychological damage has been perpetrated by a society that judged my nature to be defective and deformed and used all manner of abuse to try to turn me into what they want me to be. (The rest of my misery is just life being life.)
And I don't need or want any of those half-baked "scientific explanations" for my gender variance. For one thing, they're highly dubious. They all turn out to be sensationalized misinterpretations of preliminary and probably not well thought out studies, much like the ones that say eating oysters will make you lose weight or wearing boxer shorts will make you live longer. (Assuming they're not entirely made up.) For another, they seem like just another way to shove me into a box, and if I don't fit, well, maybe I'm not really trans.
But finally, why should we even care? Nobody is doing brain scans or examining fetal hormone levels to figure out why I am good at math or why music seems to connect directly with my soul. Why only in this one aspect of who we are do we suddenly need to have Scientific Explanations(tm) before we can accept that we really are the way we are?
As for SRS and all that: if that's what you need to feel comfortable with yourself, why not? And if it isn't, why do it? IMHO, it should not be any more a moral issue or a life-threatening psychiatric disorder than a nose job or a boob job or fixing a cleft palate: if the way your body is causes you distress, and there's a straightforward medical fix, the distress should be reason enough. You shouldn't need brain scans or maternal medical histories (or to prove something to some transphobic doctor) to justify them.
