Here's more of what Chapman is saying:Disney largely glossed over the details of Merida's new look in a statement to Yahoo! Shine: "Merida exemplifies what it means to be a Disney Princess through being brave, passionate, and confident and she remains the same strong and determined Merida from the movie whose inner qualities have inspired moms and daughters around the world."
In an interview with Pixar Portal, "Brave" writer and co-director Brenda Chapman stated, "Because of marketing, little girls gravitate toward princess products, so my goal was to offer up a different kind of princess -- a stronger princess that both mothers and daughters could relate to, so mothers wouldn't be pulling their hair out when their little girls were trying to dress or act like this princess. Instead they'd be like, ‘Yeah, you go girl!’”
I don't think that all, or even most, parents are "pulling out their hair" when their daughter watches the other princess movies or imaginary plays being another princess. Our six year old does this, but she also pretends to be Spiderman and other characters. Chapman seems to be very controlling, and would blame her daughter's interests on marketing departments.
It also seems Chapman wants Merida to be this "You go Girl!" type of role model that is totally different from other princesses, perhaps she thinks that everybody hates the old princesses. Well, not sure about that as they seem to be popular, though Belle, Ariel, Sleeping Beauty, Cinderella and Rapunzel seem to be the most popular.
I really liked Brave, but I think a good part of Merida's story was a cautionary tale in terms of trying to change her mother, and constantly getting in fights with her mom. Sure, the whole anti-prearranged marriage thing was there, but its been done before (to death) and didn't seem to be the main point of the plot.
Little girls, tweens, and pre-teenage girls surprisingly like some romance in their movies, and that includes Disney princess movies. But who is Chapman to say that Belle isn't brave, that Ariel wasn't strong, that Rapunzel and Tiana don't fit the bell, that little girls must not watch Cinderella, and all these other films, as it will warp their minds.
Chapman even admits that she is taking advantage of the princesses, noting that girls gravitate towards princesses, so she'll make a princess that mothers and daughters can relate to. It seems to me that Chapman may have had a daughter who liked the other Disney princesses, she didn't approve of them because she has sexism on the brain, and so she created a type of princess to surplant them. So, she discounts the other Disney princesses as not being good for little girls, reminds me of a "mother knows best" song from another princess movie!
Chapman said she called up Iger and gave him a piece of her mind. She sounds like a generally angry/controlling person who easily finds a lot she doesn't like about Disney, or society in general.