Gays might need therapy, but this might be the wrong type of therapy. It makes gayness the focus, in fact obsession. A rabbi I know said that the main problem with gays is their identification with their behavior. Maybe they need something more indirect, which would draw them away from it. There is no magic bullet, though.
I’ve heard of some gays changing over the years . . . either improved relationships and life experiences, overcoming early trauma & abuse (prevalent among many of them). So I don’t believe it is a fixed thing. More likely a pathology. Something else is going on.
Christianity can go deeper in addressing the problem. It has to be voluntary however. It cannot be stuffed down anyone’s throat.
I think some of the attempted therapies in the past were both demeaning and futile: for instance, electro-convulsive shock, aversion conditioning, etc. But these are therapies which were used for a wide variety of psychiatric maladies in decades past, including depression, psychosis and bipolar disorders --- not just homosexuality.
These have been superseded by better approaches. All therapeutic intervention should not be discredited, just because some approaches in the 1950's and '60's rightly fell out of favor.
I mean, Good Lord! Now the APA wants to "treat" gender dysphoria with castration and a lifelong regimen of induced hormonal abnormality!
Counseling a kid who wants to find greater harmony via reducing unwanted sexual urges and strengthening his normal response pattern is both professionally ethical and a compassionate response to the young person's felt need.