Remember when you were in college and you learned the term “ethnocentric?” As in, the belief in the superiority of one’s own ethnic group. The corollary was “don’t be judgmental. Cultures are neither good nor bad. They’re just different and, well, cultural. Don’t judge them by your (usually skewed Western) standards.”
And then along came folks who used rattlesnakes in their religious services. Or tribes who engaged in genital mutilation. And, for all too long, anything Taliban. Pick an abomination. Most recently, it was the couple who were executed in southwestern Afghanistan for trying to elope.
Ethnocentrism. There’s a reason why it lives on.