I have to say, I totally agree with the author.
I'd like to take it a step further, though. I think that in those ten films Pixar's pretty much come up with one female character.
Toy Story 2's Jessie, the Yodeling Cowgirl, The Incredibles' Helen Parr / Elastigirl and Up's Ellie are all pretty much the same. Each is a strong, red / auburn haired tomboy with a feisty if not downright aggressive nature.
I'm not saying it's the same as having Phil Harris voice Baloo in The Jungle Book, Little John in Robin Hood and Thomas O'Malley in The Aristocats, but there are certainly similarities.
You have to wonder if Pixar chief creative officer John Lasseter's wife is a petite, spunky redhead?
Personally I think that Jessie, Helen and Ellie even all look the same:
