Read other letters about this article
A central problem, Sunstein argues, is that Americans now think of themselves more as consumers than as citizens.
This is an excellent characterization but it has nothing to do with the internet. In fact, internet culture has done a great deal to counteract the monolithic quality of the traditional news media. Whatever view one might take of their politics, there is a general consensus across the American political spectrum that the mainstream media all say the same thing, whether or not it has any basis in fact. (And that the right-wing noise machine, or the right-thinking patriots of Fox News and its ilk if you want to be fair and balanced, all says its own, and different, same thing.)
So why didn't the interviewer ask Sunstein to explain his particular focus on the internet?