“A bisexual or homosexual cannot change. Reparative therapy doesn’t work.”
I don’t know if reparative therapy works or not. I suspect that it may depend on how you define work. Does “work” mean an increased ability to suppress ones urges? Does “work” mean developing an attraction (even if minor) to the opposite gender? Or does “work” mean only a full blown change in orientation?
I also think that there is misapprehension as to the general success of psychotherapy. Almost no psychotherapy “works” in more than a 1/3 of cases and they define “work” very loosely. I wonder if reparative therapy does damage because there are false expectations.
However, I have a very hard time believing that it is literally impossible for them to change. There are very few things that one simply cannot change about themselves. It may just be so difficult that 99% who try will fail. One can then have an argument about whether it is worth it to try if failure is such an overwhelming likelihood.