Had a similar initial reaction and came to the kid show conclusion too but it didn't make it okay in my book. Loved the idea of the book(s) and it's well put forward but her overacting this 'over the top happy go far' personality in the video was just distracting from the point of the whole thing. The video is targeting sponsors on kickstarter not kids who will read this. I think it would have been better to tone it down a bit and then just go all outboard in the promotional material after the book is done.
I have nothing against it, although it wasn't my personal taste. I just want to point out that being exaggerated and semi-crazy is not the only way to get kids excited. It is maybe the "TV show for kids" way. I often cringe inside when I witness that way of dealing with kids, because to me it seems not very genuine.
Again, if people like it, and kids like it, fine. I just wanted to comment because I think it would be sad if everything for kids would be converted into that kind of format.
Actually the whole premise of "getting kids interested" already points to a problem. Kids are naturally interested. You don't have to go into manic mode to get them interested.
If it was a Kickstarter for an invention or a software product, I'd expect the presenters to be a bit more sedate. But given what she's selling, I think showcasing her personality helped make it clear that she's the right person for this job.