My youth pastor has actually spoken about his experiences with praying over homo/trans/bi -sexuals and “freeing” them of their demons.
Your pastor is a charlatan.
I don’t remember if he used the terminology I did here (and I think I did a pour job of saying that, now that I think of it), but how can you claim he has never seen a person with a “different” sexual preference change their mindset after prayer? Believe me, I know this man, he is no fraud. He claims nothing of himself that is fraudulent.
While I’m not going to question the honesty of your pastor, I will say that he’s likely been conditioned to see demonic influence/possession where there isn’t any.