Sex education is, outside of some places in Europe, very rare. You'll certainly find such things far and few between in Asia. So not only is it absent in non-Christian nations, but the places where it is present, like Scandiland for ex, tend to be Christian.

Porn, let alone fetish porn, has a big problem because all the actors, including "amateur", are not only 'heavily used' and completely desensitized, but also the sort of people willing to publicly share video of themselves having sex. And so anybody taking any sort of que from there, whatsoever, has no clue what normal sex or normal relations look like.