I don't see that at all. "Is Tarquin morally justified?" sounds like it should be a discussion of his grayer actions (namely, keeping the continent in a state of controlled anarchy). That thread opens with his atrocities, the sorts of things that nobody in their right mind would consider morally justified (eg all the raping and torturing of his numerous "wives" or the 200-foot tall flaming letters). The OP's just saying he can't understand the popularity of a character who does something like that. It's got nothing to do with his justifications and everything to do with the actions he doesn't bother justifying.