I'm surprised you're getting voted up. As much as I disagree with most of the privacy agenda, a lot of their fights are the only thing stopping us from turning Orwellian.
Nothing to hide is pretty arbitrary, too; you mean you have nothing to hide under our current laws. So sure, let them bring the cameras in. Then they'll rewrite the law and you'll suddenly have something to hide.
Yes it was sarcastic. As other commenters said, it's a very common and senseless rhetoric used by anti-privacy politicians. Applying it to an extreme example (like camera in your home) was meant to demonstrate how daft such a stance is.
But I disagree, I think it was a very good spot for it: In my mind, some of the best irony is when it's nearly indistinguishable from truth. So I will take the swinging karma as a complement :D