Nothing to do with America or Americanization. Asia has more than it's fair share of nut jobs.
I know it's never good to generalize, particularly about a specific group of people, so I make these observations only from my own personal experiences.
Over the years I worked with several Asians from Korea, China, Japan and the Philippines. They were all lovely people who would go out of their way to help you if you should need it, but the ones I knew also tended to be rather high strung perfectionists who often seemed on the verge of a minor breakdown, even when the cause of their distress turned out to be somewhat inconsequential in the scheme of things.
However, I guess I should emphasis that since I saw them only in a work environment, that probably had a distinct bearing on the certain behaviors of which I am commenting.