That. Joscha Bach pretty much summarized the problem with just one word: Overfitting. I've since spotted the pattern several times. People going all in on psychedelics, seeing them as the solution to almost everything. Leary and McKenna starting a cult. Esp. McKenna and the true hallucination story make it pretty obvious that these two brothers overdid it so much that they couldn't just leave it behind, they had to follow up and supposedly go deep on that stuff.