Yes, Idiocracy was not an insightful commentary on the theory of downward intelligence drift - that was merely an means for letting Mike Judge do what he's built his career on: giving viewers the opportunity to watch stupid people do stupid shit and laugh their asses off. Which is why it's really annoying when people not only presume it's possible, but that it's even true. What, we can figure out that big robots that turn into cars is fake but we can't figure out that stupid people aren't taking over humanity?