They have been able to, in repeatable experiments, get a high yield of people claiming to have religious experience while on psychedelics in a relaxed environment listening to profound music. Maybe you won't have one Ismene but there are gobs of evidence; you cannot simply dismiss it as a conspiracy.
Case 1. People black out completely from drinking and do lots of stuff, yet remember nothing.
Case 2. People can have dreams where they don't think they're dreaming.
Case 3. People have DMT trips, commonly, and completely forget where they are and what they are doing.
Case 4. People have near death experiences.
So the question is not whether people have these kind of experiences but whether psychedelics can trigger a specific kind of experience.
All the elements are there from the previous cases to suggest ego-death is a possible experience.
In each previous cases: blackout, dreams, NDE, age so on, there are similarities between individual experiences of the same sort, because people are profoundly similar on an evolutionary scale.
Everyone is using the same chemicals.
It makes perfect sense everyone is having the same experience.
Whereas you take the question of Satan. You do NOT have gobs of evidence that such a thing actually exists. People may see Satan but that may just be dreams, not a real actual thing.
You are dismissing accounts of an experience as nothing more than a shared symbolism, like Satan. Denying that people ever see Satan is... well, the question is not whether they do or not, but whether they would without the idea planted in their head already. This a chicken and egg problem.
I would say Satan is an allegory that fills many rolls, if we lost Satan there would be something to replace him as needed. Like Greek vs Latin mythology mixing and matching aspects of Gox.
As far as the ego-death experience, in my case there were elements that seem to match ego-death but my description does not match with everyone else's. Firstly, no psychedelics. Secondly, it was brief. Thirdly, it was an intense white light. Fourthly, it was followed by mental illness and depression.
But there was definitely death and the ego, although I do not like using this term this way, I can see how it could be described as losing your ego. Blargh.
So if those two are what qualify an ego-death then that seems to be my case. I certainly had ideas planted in my mind about seeing something did but at the same time it was fairly intense unexpected thing and a profound result, not just something entirely coincidental. What surrounds the experience is like a dream, something the mind uses as a buffer zone; not fixed realities.