1. This
actually happened to homosexuals in the west during the twentieth century. The worst social ostracization faced by individuals who disapprove of homosexuality today really is not even noteworthy by comparison. Compare Brandon Eich to Alan Turing, for example.
More-over, pathologizing homosexuality continues to happen in many parts of the world and even, de facto, in some parts of the US (e.g., "gay camps", which often have some component of psuedo-psychology on top of their religiosity).
2. Popular presidential candidates and members of the party that controls congress openly and proudly express anti-homosexual views. The idea that society is on the verge of pathologizing people who disagree with homosexuality is absolutely absurd.