He's quite right. There isn't a thing wrong with being a girl. There's no reason to not like pink and lace and playing with dolls. I socialize in many circles where being a girly girl is looked down upon. Like a girl or lady couldn't possibly be for equal gender rights if she likes to get her nails done and buy tons of shoes.
I can't think of a single thing wrong with a woman CEO that likes to shop for adorable outfits or the gamer girl that collects Hello Kitty and only plays pixie healers cuz it's just cute!
Personally, pink isn't for me. I rarely like sappy romantic movies, can't stand "Sex in the City" and have mild panic attacks if I spend too much time in the American Girl store. But I looooove shoes. I enjoy getting dressed up and looking cute on occasion.
So I say, Ladies, go out and look adorable. Let your daughter play with a Barbie and pink Legos. Just don't forget to make sure your little girl knows she can do what ever she wants!