Those stories always follow the same pattern - pick out the most extreme example of something that you can find, then spin some superficially insightful theory around it relating it to some essential difference between Japanese culture and other cultures.
There is no such thing as essential differences. And if all that reaches your attention about a faraway place is the extremes, you are bound to come to some weird conclusions.
It's just too easy to apply this recipe to anything you don't understand well. Just imagine the stories you could tell about European student culture if you started from the Belgian Reuzegom hazing story [0], and generalized from there.
[0] https://en.wikipedia.org/wiki/Reuzegom#Death_of_Sanda_Dia