Comment by simpaticoder

You didn't describe, but rather demonstrated, another aspect of the pattern which is that someone inevitably "goes meta" and remarks on the pattern - and usually someone points out that it's "not black and white" and the sub-thread decays into muttering obscurity with no real conclusion or insight. Personally I've come to see this as a niche form of "exuberance of the young" which is itself wasteful in the strictest sense, but is more generously characterized as a side-effect of other, hopefully more important personal maturation effects.