Periodic Chinese fire drills are needed to keep JWs on their anxious tippy toes: although the specifics of the latest "threat" will soon be forgotten (since it's occurring in the neocortex), the generalized and vague sense of anxiety created (in the brain stem) will linger much longer, and that's a win for WTBTS.
Edit: wow, that's pretty harsh with the "stupid, ignorant, or insane" thing, no? What does that say for ex-JWs, then?