I'm in favor of Shannon based assessments of information. But you've assumed that the only information that could be carried is whether or not the author agrees with OWS. In addition to that (predictable / null) information, he also puts forward a theory on how WS reacts to criticism:

In fact, the more reasonable and moderate a critic sounds, the more urgently he or she must be demonized

He may or may not be right, but either way it's a valid viewpoint, and one I find interesting. IMO, that's where the real signal is in this piece.