I think you may be missing the forest for the trees. My personal insight from psychedelics was that what I perceived as "reality" was simply wetware converting signals from my senses into perception. When something changes that perception (sometimes dramatically, like patterns on solid objects moving fluidly behind my hands or gazing at shimmering geometric rainbows etched into the walls) one understands that reality is just in your head. IMHO that's a powerful construct, especially for an optimist: it's easier to imagine changing the world when the world is so easily changeable in your head.