My lot love the (boring plotless) books and TV series and I think it's ok with occasional annoying moments.
What's annoying me at the moment is they showed what about 10 episodes, and then repeated them, and then stopped showing it! ARGH. My 7 year old is desperate to see the one where they move house, which I (stupidly) told her would be bound to be coming up.
Re the sexism, the cupcake thing was a bit silly, but otherwise, it reflects real 5 year olds pretty well - most girls really do like butterflies, most boys really do prefer dinosaurs. I'm not saying they all should or do, but I think a programme where they constantly gender swap just for the sake of it would be wearing. "Tim chose the pink cup. Topsy played with her trucks. Tim wore mummy's dress and Topsy dressed up as Spiderman." Personally I think that would smack of trying too hard, AND be unrealistic.
In my wide experience of pre-school/school age kids, most girls love pink, most boys love cars. Sorry if you don't like it but that's the way it is, just like you probably enjoy a manicure or facial more than your DH would, and you probably have less interest in football/motorbikes than he does.
Anyway, I just want to know when they are showing more episodes, as according to wikipedia they made 66!!!! Why did they only show 10 or so?