when dd did "good toes naughty toes" for the first time it was like being transported back in time 30 years for me!
I think childhood should be about balance, and encouraging their interests while also keeping children open to all the other options out there.
Dd (3.5) showed an interest in dance almost before she could walk. Her nursery do a lot of dance (with all the boys and girls) and spotted very data how she "transformed" when she danced.
Outside of dance she is a rather wild and feral child, who loves swinging from the climbing frame, scooting down ramps at the skate park, and squabbling. But I guess if you saw her just for the 30 mins a week she does ballet in a pink leotard you might (wrongly) make all kinds of judgements about the way I am bringing her up. She lives to dance. First time she took a ballet class she came running out saying "mummy I NEED to do this!". She does musical theatre too now, and is looking longingly at the tap classes . We go to science museums, skate parks, sports matches, swimming, gymnastics etc but she basically sees these as ways to pass the time until her next dance class.
So yes, you might judge me because she dances and her brother doesn't. But he had the same initial exposure (dance at nursery), I have always offered him chances of dance lessons and shown videos of male ballet dances, but he would (to paraphrase) prefer to eat a bowl of sprouts than attend a dance class.
Had it been the other way round, I would happily ferry him to dance lessons.
Sorry, am rambling and tired, but I think we don't need to panic about girls doing ballet if that is what they want to do. feminism (to me) is about choice, as long as girls have choices and opportunities to try different interests then we are raising them fine