I don't think it's implied that she's making the claim that this group is going to be perfectly representative of their target demographic. She's simply saying that there is heterogeneity in a group that is ostensibly homogenous through a DEI lens.
Gender roles are just as pronounced in the East; me being in China as I write this. Maybe this says a little bit more about our biology and a little bit less about structural bias.
And it's exactly that the experience shapes us. In the West, gender roles are still very pronounced, shaping our experiences in certain ways. Males are taught to go for wins, females for maintainability for one.