Sure, as the article states:

"We offer the hypothesis that toy preferences reflect hormonally influenced behavioral and cognitive biases which are sculpted by social processes into the sex differences seen in monkeys and humans."

So yes, there may be some biological/neurological biases, but that they are then socially reinforced, which is exactly my point.

And last I checked, one of the things that makes humans humans is our ability to grow beyond our basic wired-in instincts. So I fail to see how that article can be seen as a pass for what is clearly a cultured gender bias.