Pray allow me to elucidate:
I know nothing about Toban, save for, as you said, his sound management of this list. When I referred to enlightened self interest, I meant it in this wise: I found the original post to be annoying, sophomoric, and trollish. I thought, as I was watching the clickety link, with shock and horror, "This guy shouldn't be on this list; I don't care to read what he has to contribute."
When I referred to "self interest" on Toban's part, I was making a (weak) point about how, if Toban found him annoying, and banned him for being annoying, this action, motivated to some degree by self interest, resulted in pleasing effects for others.
Dang, now Toban has clarified matters. Curse his fast-typing skills!