That's not true. There would be a huge outcry, specifically from the psychology camp you are disagreeing with, who would get very huffy and maybe insinuate you don't have the best intentions and the psychologists who think you are right would back you up and also get huffy and write angry letters about letting feelings get in the way of physical reality and that we shouldn't let current stigmas about "mental illness" stop us from improving our understanding and cataloguing of mental disorders.

You know what doesn't happen? Making it a felony if a book that contains a trans person exists on your bookshelf in your classroom. Telling the general public that if you allow trans people to use the bathroom they feel comfortable in, they will molest and rape your kids (this is a real take right now). Entire forums set up with the express intent of bullying people into killing themselves.