Here’s an entry in Conservopedia which gives a different point of view.
Until Freud, people who committed homosexual acts were not considered a certsin type of person, as they are today, just people who engaged in certain acts. Their reasons for doing so appeared to many to be stem from lack of self-restraint in sexual matters and being either isolated from members of the opposite sex or sunk into depravity.
Freud suggested that people who did a lot of this were a certain type of person and now the paradigm is that people who commit these acts are homo- or bi-sexual.
Since these acts were outside the social norms of western society (not to mention illegal), therapy tended to be along the lines of getting it cured. This went on until the APA’s change in diagnosis, which was, according to witnesses who were there at the time, more of a political decision caused by forceful protest than a truly diagnostic decision.
Now conversion therapy is considered to be politically incorrect. After all, CT would be based on the idea that homosexual tendencies indicate some malfunction in the person, and this is not a politically correct idea, and is in itself considered “shaming.”
However, a therapy used in the past, aversion therapy, did use methods which could be considered torture under other circumstances, since it involved a negative reinforcement when an unwanted stimulus occurred (for male homosexuals: an electric shock when pictures of men showed on a screen). So some therapies have indeed been, like frontsl lobotomies and electro-shock, rather awful.
Proponents of CT for those suffering from same-sex attraction claim some success, which is denied by those considered to be more mainstream.