I didn't vote. Mainly because looking at it from a parents prospective of it depends on the child. I have a 5 year old and a 4 year old.

My son now 5, absolutely not. He is quiet, a little shy and extremely smart. He would much rather sit and look at books, bugs, and explore.

My daughter however, who is 4, and if little Bob is anything like her. Loves the spotlight. She would love it, and eat it up Everything is about her always, and if someone tries to steal her spotlight, she'll let them know. Yes she is a Leo

However the most important thing here and I can't stress this enough. Is that his Mom listens to him. If he doesn't like doing it, she stops. They don't force him into it, or to finishing filming. He is 4 after all. I know if my daughter or son told me they didn't like something they were doing, especially something like that. I would talk to them about it, and if they didn't want to I would never even dream of making them continue, and we are not talking about going to time out here, we are talking about TV.

So all in all, I don't think they are exploiting him, I think they are giving him an opportunity to be want he wants to be. Like his Dad. I see nothing wrong with it as long as its something he wants to do.

4 year olds aren't capable of making large decisions like that, however they are very capable of announcing their likes and dislikes.