I feel like people are going to get mad, but that isn't a kid's show. It's more like a teenager and adult show. It's anime voiced by adult actors. Even if we go by the fictional age of the fictional characters they are canonically teenagers, and of fictional legal age in many countries even though the show doesn't depict them in any kind inherently sexual situations.

I mean its a little odd, but I don't think its pedophilia. Your title makes it sound like he was jerking off to Icarly or Sesame Street. You are free to think its weird, free to leave even of course, but I just don't see the victim here.

(Lets just save some time before someone comments, no I don't do this so I am not justifying anything.)