I'm reading this thread with increasing dread. I have never seen so many logical fallacies in one chain of argumentation before, at least not in this community's forums.
Confusing the validity of a statement with the personal qualities (such as social status, professional history, personal type, etc.) of the deliverer of the statement (that is, committing social fallacies) is perhaps the most basic way of sabotaging a process of truth seeking. If it's done deliberately, it's a serious crime.
Far from everyone in this world has had the opportunity to get informed about the basic rules of argumentation but I'm very surprised that the argumentation veterans of this community display such ignorance. This is serious. We got to help each other wise up.