I know people who have a genetic variation that makes them different. They are color blind. They were born that way. Have you seen the viral video of the guy who gets special glasses and can discern colors he never could before? It's fascinating and wonderful.
Now, what about sexual orientation? Suppose it could be fixed by some special hardware like the glasses. What does that say about orientation? Would it be right to round up all the gay oriented people and give them the hardware so they could be normal?
I think that the "born that way" premise is not a very good argument to make. It's fraught with unintended consequences. Another such consequence is that this kind of argument is often used to justify behavior rather than take responsibility for behavior.
Maybe the whole dialog needs to change. I know I didn't choose my own orientation, and I don't think it's going to change any time soon, but that doesn't mean my orientation controls me. I can take ownership of my own traits and make my own decisions.