I think, in order to get a little bit closer to actual reality in this conversation, there are a couple of things which need to be considered if they have not already been addressed.
First, many attempts have been made in the past to "cure" homosexuality and they haven't met with much success to date. That in itself would not be problematic if the treatments themselves were harmless, but they often aren't. Measures have ranged from things like invasive surgery, lobotomies, shock treatment and other aversion techniques, epigenetic therapy to corrective rape to psychological therapy, counselling, religious intervention and prayer, conversion camps, forced marriages and other methods of basically willing oneself to be straight. That's not an exhaustive list.
The fact that these treatments have failed does not mean in is impossible to find some treatment which would alter a person's sexual orientation, but the problem is most of these treatments have come at a price for the people undergoing them. Many of these treatments have led to severe physical and/ or psychological harm. This isn't a game. A lot of damage has been done already. Lives have been ruined and even ended as the result of misguided cure" attempts so no person should EVER take this shit lightly if they are suggesting treating homosexuality.
Medical and psychological opinion has been consistently shifting to the position that research indicates homosexuality is part of expected and healthy variation in human sexual expression. It's not only that it doesn't need to be changed; it is often harmful to change. Conversely, in societies where homosexuality is widely accepted and equality is protected, what happens? Well, gay people live their lives much like all other people with no real evidence of harm to society to date. If anything, it's easier for gay people to productively contribute to society and have healthy lives.
Just to recap, thus far treating homosexuality has largely led to harm and at times outright barbarity and cruelty. Accepting it and protecting the rights of gay people has led to a neutral or possibly even slightly beneficial result. Now, if someone can provide more (actual) evidence which changes that story, that evidence should be heard. If, however, we're trumping our existing, actual track record with unsubstantiated speculation, that's just plain stupid. With what we know so far, we need to show measured caution with treating homosexuality and not with accepting it.
Second, when it comes to conditions in need of treatment, homosexuality just doesn't rank. It doesn't even register on the scale. It doesn't inherently cause suffering that we know of and there are just far too many serious ailments in need of treatment that diverting resources to make homosexuals heterosexual seems negligent. Commercial enterprises tend to have different priorities on what needs treatment, but curing the gay likely has almost no commercial value, at least not compared to curing erectile dysfunction or making weight loss easier. Even if it wasn't seriously dodgy business to try to cure homosexuality, it would still remain too uncompelling and insignificant to the interests of modern public interest or commercial interest to be given serious attention. Even the study of what affects and determines sexual orientation seems to be largely only of academic interest for the sake of knowledge.