Wow this sheds some new light on an anecdotal experience if mine:

I once watched a climber free climb a moderate 30 meter route me and my friends had just completed with ropes, and he mentioned his LSD hallucination was peaking as he saw us at the top.

I considered that maybe climbers like him have exceptionally higher risk tolerance or a habituated comfort with psychedelics and climbing. However, as someone with a reasonable amount of exposure to both of those (separately), it still baffled me. This feels like a more palatable explanation in tandem with higher risk tolerances and habituation.

Great read. Thanks for sharing!