Into each life, a little rain must fall.
Of those you've mentioned, I think Eschoir is the only one committed to the downfall of FR. Of course he doesn't participate on LF.
Arator isn't such a bad guy. He's passionate about what he believes in (which isn't all that different from most of us), and he got a little wrapped in petty squabbles here. The result was banishment and bitterness. I suspect if tempers were a bit less intense (and the moderator crew could manage to tolerate dissent), Arator would still be posting here, and his contributions would be valued.
Todd... well what can I say.... he's Todd. He isn't happy unless there's a controversy, and he's at the center of it.
jj... he's just a troll (but a funny one at times). His participation consists of choosing one side or the other in an existing argument (for no particular reason) and egging on the participants until a fight breaks out. Classic troll.