This, IMO, is one of several main failings of the mainstream LGBT movement.
Yes, it isn't a choice - that much should be obvious. But the whole sentiment reeks of defensiveness. "Oh, I'm gay, but it's not my fault, so don't blame me for it!" I mean, I'll admit that I used to think that way for a long time too, but I really think the argument needs to shift from "It's not a choice, don't blame me" to "Does it really matter why I am how I am?"
Consequently, stuff like "Born This Way", which I used to like a lot, has started to leave a bit of a sour taste in my mouth. While clearly done with good intentions, there's still defensiveness permeating the whole thing. And as long as there's defensiveness, there will still be feelings of "Oh, why are they being so defensive? It's because they know it's shameful and are just afraid to say so!"
I don't know, it's just frustrating to constantly be treated as a footnote by society, and have mainstream campaigns ostensibly seeking liberation only helping to reinforce that.