I find it very difficult to believe that anyone experienced and conscientious enough to work for the FSF "harassed by a transphobic colleague for being trans". Even if someone is anti-trans, it should be clear that in the current political climate, openly expressing these views is a career death sentence.

Is it possible that things went down as the post suggests? Sure. I find it much more likely that the individual involved interpreted neutral comment of some sort as an attack on her gender, then stirred up trouble. Why do I have such a dismal view? Because it keeps happening, over and over. The perpetually offended have ruined too many good careers, and we need to stand up to them.