The most narcissistic people I know are South Asian males who are by culture and religion, are cosseted and treated like little gods from the moment of birth. They are treasured and valued far higher than their sisters; yet they are the most arrogant , entitled, pompous, status-seeking arseholes, to put it politely. While their sisters are neglected and can be malnourished , i(n India, for example, where there is a severe imbalance in the ratio of females to males in the population) these males cannot stop their frenzy of taking taking taking.
Not surprisingly, for me, the whole premise of your article is difficult to take seriously.