There is a wonderfully written article, Why Were the Early Psychedelicists So Weird? https://slatestarcodex.com/2016/04/28/why-were-early-psychedelicists-so-wei

There is a wonderfully written article, Why Were the Early Psychedelicists So Weird? https://slatestarcodex.com/2016/04/28/why-were-early-psychedelicists-so-weird/ https://slatestarcodex.com/2016/04/28/why-were-early-psyched... that expands on your important point.