I think it’s more of a cultural thing. In eastern religions and cultures their NDE’s are like river and ocean crossings. Ours are white lights, or Jesus which is a white light, and relatives.
I think it’s comes down to a more of a collective “subconscious” that were all tapped into. We share information that way, including beliefs. Then those beliefs can be experienced by anyone. But the underline metaphor isn’t objective. I think people can think their experience is objective and they can carry that into a belief system. But that’s more of an illusion of our condition - we believe what is in front of us as an objective thing. Reality is just deeper than that, especially at the mental level.
I’ve also had a prison planet trip myself. Never even heard of it before. But I grew up in a Christian house. The mushroom trip sent me to absolute mental hell. It took me months to get my bearings back. I thought I had died and went to hell. I thought I was being punished and imprisoned.
Years later after having OBE’s and deep diving this stuff, it clicked that my trip was a manifestation of all my religious upbringing - judgement, eternal hell for rejecting the one “true” god, punishment, etc. just all the underline fears that comes with these abrahamic religions.
Gnosticism is just a branch of Christianity. So the themes and metaphors are across all sects and branches. Just different versions of the same sort of “judgemental” god. What sends us to prison, judgement, a judge, for not following strict rules and laws. That’s a huge theme in western religions.
So the manifestation of that is a person truly believing they are being punished by an evil god, or a god that says he’s good but does evil acts.