A) they say there's an actual human being answering, rather than an AI. While this doesn't indicate that the questions won't be fed into an AI, at least a person has an opportunity to be trolled.
B) they know damn well that droning American cities will be the end of them. Even the Bush administration knew better than to claim responsibility for conducting terrorism on US soil, although they did such a bad job of denying it that most people know they were involved anyway.
Perhaps your point about being conditioned to acceptance is valid, in that light.
Thanks!
A good AI should be trollable. But if those exist I don't know..