athrowayyyy

The idea that "the other culture" is some sort of inscrutable, mysterious entity that's completely alien to any kind of understanding or bridging by foreigners is a common talking point of authoritarian, nationalistic and/or warmongering rhetoric. It allows to make a number of points, such that foreign country X is the enemy, immigrants from country Y could never integrate, critics from foreign country Z should shut up because they can't possibly understand OUR culture, etc.

This kind of mentality goes beyond countries or cultures, but also affects differences between generations, genders, sexuality, etc. It is far more convenient to explain away different behaviors as "It should be expected, she's X" (or the flipped "I can't help it, I'm X") than trying to work out and overcome differences on an individual level. We're all guilty of it to some extent as it helps build a sense of identity (notably among minority groups) but the normative aspect of it is very harmful.

Many places in Europe run way older infrastructure yet feel more developed than top tier cities in the US, so I don't think that's the reason.