You might not think that if he was making disgusting comments about your daughter.
There appear to be some personal animosity between you and JTT which might provoke misgivings against the poster in question. I have this same intense feeling against Oralloy (probably more so) whose blunt disrespect for others impacts my equilibrium, causing me to lose control, and his trashing of the victim, Meredith Kercher, and her family. To me, that's unforgivable! However, JTT must not annoy you too much because you're still communicating with him despite your obvious dislike.
Might I also add, I can understand a parent's emotional sensitivity pertaining to their offspring, but sometimes parents may be hypersensitive. I do not know the particulars and certainly am in no position to comment because I do not have a daughter or children....I do have nieces and nephews and have observed my brother and his wife's response to events....not all parents are the same and the circumstances vary. Each problem stands on its own.