Maybe I read this too quickly, but it seems like they're extrapolating from a fairly obvious "Don't let your one year old watch TV ten hours a day" to "Don't let your one year old watch any media at all", without any actual research evidence cited to back up that leap.

Or to put it another way, I'm really seriously doubting I measurably harmed our boy by letting him watch 15 minutes of traditional music videos a day when he was a toddler. (Mostly Liz Carroll, Peter Horan, and Daniel Payne, as I recall.)