Yeah, well. I think Psychologists are mostly idiots. You have a few brilliant ones (Jordan Peterson for one) but a lot of kooks.

Straight porn and live hookers? Sheesh. Look, I think it might be able to train your mind to get aroused to different types of sex. (And man, the internet and internet porn sure is good at that) But I doubt that's a useful way.

If someone has gay ideation or transgender issues because of unresolved issues, then work on those issues. I once met a young man who thought he wanted to be a woman. (actually, more than once). Upon some conversation, found out he had a really, really overbearing father. I could understand he had a great deal of trouble relating to his father's brand of masculinity. I think a good strategy of therapy would have been offering a different kind of masculinity. (Like a scholar or caretaker rather than soldier or police officer). Unfortunately, he wanted to become a woman and ... I think that was a bad plan. Running from the problem instead of facing it. Maybe he could have dealt with the issues with his father and still want to become a woman. Fair enough. But, you know, deal with the unresolved issues before you do the unreversible procedures, you know?

Gay, similar. Maybe there's an unresolved issue, maybe there isn't. It's less irreversible. (Though I think the longer one spends in the scene, the harder it is to get out. Learning to deal with women isn't easy! Takes years to learn, really).