Although I don't want to get into the specifics of the debate here, I would like to interject a bit of my knowledge, particularly concerning East Asian culture and "modern"' East Asian culture.
My father was born in Vietnam, he also lived in Japan for several years, and has studied China to some degree, so he knows about East Asian culture more or less pretty well. According to him, in these cultures, "privacy" doesn't operate the same as it does in America. Basically, although people may have separate rooms, he has noticed that in East Asia, people generally are free to go into each other's rooms without that much interruption, whereas in America, people generally keep their room more off-limits to others except in certain situations or if the person in question is pretty close to the other. So I conclude here that just because you have separate rooms does not imply "true privacy" or whatever per se, since in East Asian cultures, you can still go into other people's rooms if the situation is appropriate.
I would also like to add that sometimes in East Asia, privacy is even more of a serious thing than it is in the West; for instance, I've heard that in Japan, people are somewhat unwilling to engage in sex - or even things like kissing or close embracing - in the comforts of their own home, or even in their own room, which is why Japan has the somewhat infamous Love Hotels where people can have sex, because you don't want to do it in your own home. Likewise, I've heard that in many East Asian cultures, parents will rarely display affection to each other in front of their kids, whereas in the West, it really isn't that big of a deal if your mom and dad hug each other or kiss each other on the cheek in front of you.
Likewise, another thing to consider is personal space. which varies a lot even across modernized cultures.
Anyhow, one might argue that parts of East Asia aren't as developed and "modernized" as elsewhere, and further that my father's life in Vietnam was mainly restricted to the earlier days of the Vietnam War, when Vietnam definitely wasn't really modernized, but I would like to counter that by saying two things: firstly, that my father came from an upper-class family in Vietnam (my grandfather was high up in the foreign ministry of South Vietnam), and they picked up quite a number of conventions and customs from the English and French; secondly, that Japan itself proves that a society can still be modernized, Westernized, and yet still reasonably unique. Especially in Japan, where politeness, modesty, and one's place in society matter quite a lot, one can see that they are, sometimes, entertain "more privacy" than Western, modern cultures, but, on the other hand, sometimes they also entertain "less privacy" as well.
Just my two cents.
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