I think he's pretty consistent at spreading bullshit... reason being is that one front, a lot of what he says is pulled-out-of-the-ass conjecture made out to sound as if it's factual, some of what he says is factual, but then he uses tangential bullshit when he begins to elaborate and "connect" certain themes on particular points.
They're entertaining to watch, but if the movies are to be taken seriously, it might be good to fact check everything that the flicks put forth (as people should do with any socio-political documentary). To that end, at least he sparks debate, but more often than not (in my experience) the people that swallow the multiple thesis hook line and sinker base their convictions on what's being talked about without having done their own research on the subjects and begin their arguments for the movies with an irrational premise. Again, there are a few nuggets of truth in the films, but they're discounted when he starts force fitting other things (unrelated truths or outright bullshit) to meet his assumptions and preconceptions.