The geometric patterns are interesting to me because we can generate them as the effect of feedback loops, recursion, and iteration in pretty much every physical and logical domain. When you introduce a delay or discontinuity into a continuous process, it causes echoes and periodic patterns we would interpret as "geometric" as well. Think effects pedals on musical sounds, or modelling queues.

The underlying presumption seems to be that there are barriers to understanding a truth that can be "unlocked," which seems like a leap fraught with baggage. Even though using a poison that impairs the ability of our brain to reconcile its sensory inputs with its memory of itself is an out of "self" experience, this idea of viewing it through the lens of an enhancement or impairment yields different interpretations. A functioning society and civilization requires that people can be acted upon by - and respond to - the artifacts of language, so something that impairs that is going to raise hackles among people who think about those sort of things. But to grow it and survive we also need things that originate outside of it, so the insights people get from these trips can also be very valuable.

DMT elves I can't explain, but geometric patterns, just generate interrupts on a signal that has feedback. If they do exist, I'd have to assume they're some instantiation of tech support, as something is going to detect the signal jitter and check it.