As one of TO's "refugees", I regret invading SBP. As you may know, I
have posted here rarely, but lurk regularly, and am not completely
ignorant of SBP politics.
You describe above those who seek attention for the sake of it. They
are the Usenet equivalent of parasites. If I attracted them here, I
regret that also. Either way, I will most likely return to lurk mode
once TO is back online.
You also describe above "TO's most prominent dissident". If you mean
the persona I think you mean, he has also regularly "dissidented" in
SBP for quite awhile. My impression is that's in part because some
SBP posters sometimes not only give him the attention he seeks, but
also sometimes aid, abet and mimic his parastic behavior.
Given that, TO's parasites are but incremental additions to SBP's
woes, and almost certainly will go away soon whether or not they are
ignored. Just think of me and them as the Usenet equivalent of
herpes.