unsound
Have to gently disagree in part. That poster's message was , IMO, just plainly nasty - - as if a troll had written it, looking to start a fight. jafant does contribute, but in sentences rather than long and detailed paragraphs.
I happen to moderate a closed mailing list for over 400 of my college classmates. I'll guarantee you, if a message with similar tone had shown up, I'd have yanked it. Civil discourse has little use for the self-appointed righteous .
Just my ancient two cents. YMMV