Good on them for standing up for themselves. Throwing it out there, phobias are anxiety disorders and the word "transphobia" is meant to portray the opposition as having an irrational fear as opposed to having reasoned skepticism. (I say this even though people on this sub use the -phobia words.) So I doubt anyone that uses this word is interested in honest discussion.

The situation would change a lot if it as a catch all term has become meaningless.