Presumably you’re pointing to “ahh so we CAN pray the gay away!” or whatever other ridiculous intervention you can imagine. The pushback on this mode of thinking has little to do with whether people’s preferences can hypothetically change and more to do with 1) who the fuck cares outside of theological arguments which have no standing in developed legal systems, and 2) the “interventions” are generally barbaric and across the board not shown to be effective.
Obviously people who want to voluntarily attempt these interventions are more than welcome to (and do). But that’s never what the conversation is about.