Hopefully I caught your drift in offering this thought: the idea that psychedelics lead people to panpsychism, idealism, etc, is that these are beliefs of pre-civilized people. I don't mean that as a pejorative at all, just that monotheism and materialism or physicalism are taught to us in Western civilization, and that psychedelics might strip away the calcification of these teachings and let us see the world anew, i.e., the way people saw the world before the emergence of structured civilized society. Even looking at the Pre-Socratics like Heraclitus and Parmenides, they had some metaphysical perspectives -- like all creation is one, or all creation is constant change that kind of got erased by the more "structured" thinkers like Plato and Aristotle. Brenden's piece opens the door to lots of interesting explorations.