"We don't need anyone else, we are complete unto ourselves, we are better than others"-- is it ? "It's just how we do things? No one will understand us?" -- is it? Is this a unique thing or are other cultures very much the same in their insularity just less well known for it?
Strangely I don't think Japanese people will take offence at my question.
I've lived in East Asia (but mostly the Sinosphere) for 10 years, so I have a fair understanding of that culture, but pretty much zero in-depth about other East Asian cultures. I'm very curious
Japan not having a large presence in American social networks makes it especially vulnerable to exoticization, speculation, and exaggeration of issues in the country. Especially when the discussion is largely (not always) the result of a long game of telephone.
I'm sure the commenters mean well, just take everything with a grain of salt and do some of your own research into the ideas presented here.
https://en.wikipedia.org/wiki/Tokugawa_shogunate
as this behavior at its peak. There is still a lot of nostaglia for this period in Japan, for instance the (excellent I think) anime
https://en.wikipedia.org/wiki/Gin_Tama
is set in a fictionalized version of the subsequent Meiji Period and communicates how people at that time felt they'd lost control of their culture. Historians are not really kind to the Tokugawa period which if I had to characterize in a sentence it would be "Samurai were big shots but they'd forgotten how to cut your head off with a katana", the book
https://en.wikipedia.org/wiki/The_Culture_of_Narcissism
is frequently seen as a critique of "postmodern times" in the US but it's commonly seen in Japan as relevant to that period.
For one, monoculture can develop when a culture looks backward in a convergent way, developing "the" story of itself, and deriving lessons and forward-facing stances therefrom. This itself was a strong tradition in Japanese culture for what, over a thousand years? It's still very obviously a valued practice in Japan.
Even the cultural trauma narratives have legend-style stories to them, which is interesting in lots of ways but by definition very closed off in others.
The same traits can be observed in organizational culture in general, for example in high-demand (of their membership) religions and certain businesses.
If you combine this with things like geographic isolation (the island excuse gets thrown around a lot), specific cultural movements, a couple of well-timed typhoons, etc., the additional isolation effect has throughout time been able to seal out new perspectives and recirculate more of the previous ones.
A lot of specific and very beautiful refinements can thrive in these kind of circumstances though, so it's not all bad news.
Just some thoughts.
Japanese society is quite different from Chinese society -- whether from China, Taiwan, or elsewhere. From any other, really.
I don't blame them though. Every time I visit the West it just feels like going to hell. ( In Japan for three decades, married to Japanese with Japanese children, who are called, of course, "half". And yet they have a better life in Japan than they could anywhere else. We've been hearing about the decline of Japan since the 90s. Still waiting for it to be the horrible place everyone keeps warning it's becoming. )
Consider how national policies and attitudes around the world have changed over the centuries beyond the scope of your own lifespan. Look at how trends change over large timescales. Consider eating utensils, currencies, attitudes to sexuality, etc.
Korea gave me a very off-putting vibe when I visited. It felt like a massive, heartless tribute to capitalism. I got the sense of a certain perversion of western culture, where a glorification of American culture but no real understanding of it resulted in a strange and confused interpretation that struggles to mix with traditional Korean culture.
Japan on the other hand came across as actually a socialist nation. Wealth tax is heavy and the top bracket of earners don't make much more than the average. There wasn't this glorification of wealth that's so prevalent in western societies. Moreover, in contrast to western nations that prioritize self-interest, they are so organized and respectful of top-down policymaking that it can be seen as a fault in many cases. It made me think if there was one country that could handle climate change, it would be Japan.
Preservation of these different perspectives makes the world interesting, and allows us to learn from each other. Being "insular" is a great thing, in my opinion.
The geography might inform the culture.