yeah, that religious part was a bit far-fetched. (As a hindu/brahmin I LOL'd).
I've read several different theories of money and I don't find the debt vs coincidence-of-wants bifurcation that Graeber alludes to such a big difference in practice.
He pretty much hangs his whole approach off of that, but the two can be reconciled quite easily in my mind.
I wish everyone would read David Graeber (first) and then Detlev Schlichter.