It's even worse when you figure that Siri responds to requests like Bluetooth and brightness with something like "Surprisingly, that is not within my capabilities."
So basically, Siri understands exactly what you want to do, yet can't flip the A/B switch to do it. That's just condescending. There is no reason in the world that shouldn't have been implemented with iOS 6.
I really hope they are beefing up Siri this time around, because they are getting their butts handed to them by Google right now. I can open up the Google search app on iOS and watch the words roll across the screen as I speak them, and get a near-instant response. When I do the same with Siri? Swirling circle and a failure more often than not.