You know how Richard hates to see politics and religion on this site?
I hate explaining myself. However...
First, alerts are private and will remain so. You will have to trust that not all were from those involved in the thread. (Though, while I took them into consideration when making my decision, those alerts were less compelling to me: You don't like a thread, don't read it.)
As for the thread itself, while it started off well enough (I even posted as you might recall), it degraded into an analysis of why David Groves' original post was read the way it was.
After David posted a clarification of sorts, instead of just saying, "David, you should have made that clear in your original post," and continuing on with the actual subject, people went on hammering away on why David's first post was unclear in an attempt (in my opinion, and others as well) only to make David appear foolish.
My crystal ball, hazy as it is at times, saw a pissing match forming, not a continuation of an interesting thread. And I saw what I believe was flaming simply for the sport of it, and that's BS.
So, to answer your other question: No, I would not lock a thread that sticks to such a subject. It saddens me that you even need to ask such a question.