God, she really is pushing the West=bad and East=enlightened feminist paradise isn't she?
It's not even that - it's just mindless post-modernism: you have to throw a bit of "anti-colonialism" into the mix wherever you can.
All these references to "in the west" end up insulting to non-western cultures by representing them as a monolith, as though we're the only ones who think sex is binary. In reality, there are a handful of cultures who allow a third gender (although I bet they mostly don't think of them as a third sex), and the rest see sex as binary just as we do - and their scientists most certainly do.