That's weird. I think he has it totally backwards. SS (at least older SS) was sometimes so fast and over the heads of kids, that I question its educational value.
Mr. Rogers, on the other hand, spoke directly to children, in a patient, quiet manner that created a kind of bond between him and the viewer that a fast-paced, jokey show like SS never could.
I watch SS and laugh a lot, because I feel like it's being addressed to three audiences, the child, the adult, and the adult's inner child. All three. But whenever I see Mr. Rogers now, I personally feel like I'm intruding. It feels to me like I'm violating a special place for children to go, where adults shouldn't venture. This is just my feeling (no offense intended to anyone who watches it), but it comes from my immense respect for the man and his approach, and the intimacy he achieved with his audience. I feel like I'm listening in on someone's private, personal conversation.