Lots of Anime / Manga is state sponsored through the government's "Cool Japan" initiative, a very well funded undertaking to project soft power into the world through pop-cultural means. That's why a lot of the content is either putting Japanese culture on a pedestal, or showing the "outside world" as a dangerous, uncultured place. Exceptions apply of course - Japanese people have weird ideas about Paris, for example, which they think of as "almost as good as Japan". I guess by associating themselves with French culture, they think it will make them more cultured in turn. A funny side-effect of that is "Paris Syndrome" - a described ailment in Japanese medicine for the culture shock when Japanese people travel to Paris for the first time and see that there are Africans, or men with beards, or a candy wrapper next to a trash can. There are reports of Japanese women fainting on the streets of Paris by the truck load.