"so it's always just been hatred and rejection", didn't want to put words in your mouth, but yep that was my immediate conclusion.
I don't agree with that at all. What I'm saying is that the bigotry was constructed along with the new identities and they were devised to serve the purpose of fascism. Which can't really be reduced to "hatred and rejection" even though those are tools which it can employ.
Part of the propaganda against GSM is the idea that there is some "natural" reason these people will be subject to universal oppression. Like sex and gender variation are inherently viewed by others as dirty, bad, anti-social, plain icky and other humans will recognize that and react negatively.
Actually it seems that left to their own devices, people react in a variety of ways just as they do to any other uncommon characteristic. Which can be suspicion to adulation to disinterest or anything else. The wide-spread anti-gay/trans sentiments have to be artificially created, by people with power.