I honestly find that post comical.

Why would a transexual think a non-transexual would give a shit about being misgendered, by them? If it was a woman who deliberately called me, 'Ma'am,' to make a point, or some guy who I could easily snap in half, I'd probably laugh hysterically. The only way it would poke me and get me to challenge someone is if it looked like some guy who would be a fair matchup or might even look like he could take me, then I'd probably have to get in his face about it.