Ridiculous. Towards the original poster, on the original topic, and regarding problems he himself acknowledged and corrected, Darrel behaved professionally and responsively.
Towards the ongoing trolling and accusations that came flying from every direction, towards innuendo and discourtesy, he finally got fed up. And even then, he hardly matched the worst behavior of has accusers.
Ultimately, of course, the best advice for someone in the position he found himself would be to focus on the original question and simply ignore the rest:
Never wrestle with a pig; you both get dirty but only the pig enjoys it.