From what I understand the psychedelic frontier in the 60s was largely unaware of existing cultural frameworks around psychedelics, like the shamanic tradition in south america. It appeared they had made a revolutionary discovery of mental territory, revelatory and subjectively meaningful like to meeting your local deity.

Presuming the psychological magnitude of their experiences I can find my way into the psychology of someone being propelled into some decade long mania of propheticism and hubris (not to justify or sugarcoat the consequences).