not op, but i think that western gender roles are a scam. i'm not suggesting that there aren't differences between biological sexes, but gender != sex and the false idea that there are only two ways to express your gender is quite limiting.
There have been, and are, exceptions to this model in what might broadly be called 'the East'. Think of the Hijra on the Indian subcontinent, or the Kathoey (Ladyboys) in Thailand.
I'd also argue that their existence is not a proof that Indians have different ideas about gender than Westerners. They are a marginalized people because most of Indian society thinks it is odd / unfortunate / a disorder to be a man and yet want to be socially a woman.
It isn't Western to have two gender roles in society. Men and women are different in lots of ways and it's valuable to society to reinforce differences between the two for the sake of procreation.