At best, ex-gay advocates are ignorant - people like my family and some friends who don't know anything about homosexuality, but they know it's bad. Those same people who start climbing the ladder of information will either stop encouraging ex-gay ministries or will filter out what they don't like and/or twist the information to conform to their previous ideas that were based on ignorance. Psychologists on the whole cringe at every claim the ex-gay ministries make. Just let them read from NARTH or the Jones-Yarhouse study. In my mind, they qualify as bigots.
Then there are the scribes and Pharisees - they only accept the science that doesn't contradict their theology. "We don't change our beliefs just because science disagrees with them," one said. Theology is very subjective, so I give them more credit than the bigoted "scientists." Their problem, like those who are innocently ignorant, is intellectual and not discriminatory or at least I'm willing to give them the benefit of the doubt. However, they need to learn to reconcile science with religion for the conversation to move from opinion to testable facts and simply to become a full citizen of the 21st century.
Oh, and all this applies to those not affirming transgenderedness. Still waiting for Jerry Leach.