no if you actually read accounts they all independently see the same thing a term now described as:>Other researchers of the experience described 'entities' or 'beings' in humanoid as well as animal form, with descriptions of "little people" being common (non-human gnomes, elves, imps etc.)> Stephen Szara described how one of his subjects under the influence of DMT had experienced "strange creatures, dwarves or something" at the beginning of a DMT trip>Terence McKenna for the experience, who also used the terms fractal elves, or self-transforming machine elves
This is sufficient evidence to suggest they are experiencing a real thing and not a hallucination.
Nobody actually sees demons in the classical sense (red skin, pitchfork, tail, forked tongue, horns). I am calling them demons as a short hand for what they are: deceives, fallen ones, former light beings, whatever.
People from diverse social and cultural backgrounds would not be all seeing the exact same hallucination because they have different memories and life experiences. Which means they are tapping into another place, probably overlapping our own reality, and that's why they experience the same thing.
Take anyone to Paris and then ask them to draw the Eiffel tower and they will all draw a similar structure. Because they are drawing something they saw, entered their memory, and is being recalled- eg a real thing. Because you took them to Paris. We don't say they are all imagining what the Tower looks like from their minds interpretation via closest reference or whatever. It's a memory of an experience.
Sit in a room with a friend dropping acid or taking DMT. They are gone, the spark from their eye vanishes, they are physically in the room with you, but their mind is somewhere else.