I find this freakin' hilarious, for a variety of reasons. Later work based off Plato doesn't really fit with IE religious norms, anyway: theurgy, for instance, leaves behind many IE norms and stops making sense pretty quickly in IE religious contexts, and his cosmological understandings affect add to the speed at which later theories take off (anyone who has suffered through the cave metaphor in his Republic will know what I mean).
I think I like this most because getting out from under the burden of Greek philosophers is pretty darn tough, and it really does help make sense of why we do ritual when we sort of step away from them and reconsider things more objectively.