You say one can be cleansed from being gay. That seems to be based on on 1Corinthians6, where Paul says about not being fashioned to the world, but being fashioned to the new man.
He describes the world as being given to all kinds of sin, one of which being homosexuality. People have taken that to mean that at least one person in that congregation had at one time been gay.
Pastor Anderson pointed out something I'd previously wondered about - that the sins mentioned were indicative of the world in general - not that specific congregation. If, instead of speaking as he did, he mentioned the entire 613 laws in the Mosaic law, would that mean that every one of them that had been broken by at least one person in the Corinthian congregation?
To just about everyone in the US outside of fundamental/evangelical circles, and maybe some older folks, 'being gay', or homosexual, or lesbian means to be attracted to the same sex or to have that propensity.
The words in I Corinthians 6 you are referring to are about having same-sex sexual relations. They aren't about having the propensity to be attracted to the same sex.
If you are preaching to an audience and a man there has these kinds of feelings and hears you say, 'Homosexuals are sinning and are going to Hell', then he probably will take that to mean, "If you can be attracted to a man, you are sinning and are going to Hell.'
I would agree with the idea that a man being sexually attracted to a man is messed up, undesirable, etc. But the sin is to yield to temptation. Being tempted is not a sin.
Personally, I would not be attracted at all by a 80-year-old, 600 pound, apple-shaped married woman with hairy legs. A strumpet-type in this category could 'tempt' me, hypothetically, but internally, I would not be tempted. But if there is a man out there that finds 80-year-old, 600 pound, apple-shaped women with hairy legs attractive, and she made him some inappropriate offers, that doesn't mean he sins because he could be attracted to her.
We wouldn't preach, "Any man who is attracted to hairy-legged 80-year-old, apple-shaped women is sinning and is on his way to Hell."
It's similar with preaching against homosexuals, gays, lesbians, etc.
Another problem is with identifying oneself as gay, etc. Paul says to reckon yourselves to be dead indeed unto sin, but alive unto God. LBGT propaganda teaches people that a lust they can be tempted with is a part of their identity, something to be proud of. I haven't heard of anyone being proud of being attracted to married hairy, apple-shaped women.