Perhaps they were not suggesting deep end transphobia (hate) but just low end aversion? You should have the right to not date a trans person, or a person with different skin color, but we could ask would it be better if none of us cared about that?

If we look for the source of people’s choices one may find the answer to also be biology, with the rest being enviroment. The conventional wisdom of blaming people for their choices is not supported by evidence. Even the most evil people in history didn’t choose to have a psychopathic personality, or choose their bad parents, or their hateful beliefs.