I think you read too much into it. Not everybody likes people, and in this modern world anybody that doesn’t like people can generally avoid them pretty well. With home officing, and ordering stuff off the internet a person can be a pretty hardcore shut in and still live fairly comfortably. The only hard part is developing relationships, but even that can be done. Nobody has to be sexually dysfunctional because of the government or Hollywood to not like people.
My interpretation reads far too little of it, compared to what the Japanese think. It seems there is no consensus, but lots of opinion.
http://en.wikipedia.org/wiki/Hikikomori
From my point of view, I was more concerned with the American version, because our society is ripe for the equivalent phenomenon.
Right now, America’s “real” unemployment rate is 22% or greater. So why aren’t the streets full of homeless and destitute people?