You deserve a big hug and plenty of accolades for standing up as you did. I am sure it wasn't easy to do, just as I am sure you are proud of yourself for doing it. Rather than walking away.
This is a very hot topic. I attended several of the Maryland Senate hearings on the TG Rights Bill, AKA Bathroom Bill. I was absolutely shocked at the testimony from "The Opposition", some of which came from "cured" TG's. Given a choice of being "cured" from this by being an angry hate filled person, or continue on this difficult path I am of joy and happiness, I'll take the joyful path.
I can only speculate that the LGBT "ally" was either "cured", or a devout believer that the 'T' is for Token, or a liar altogether. The 1970's "I can't be prejudiced, I know a black person" defense.