This is in line with what I've heard a few times before. It's like self induced psychosis sometimes.
Anyway, your whole world being inside your mind is self-evident to me. That is what the superego is, partly. An integrity model/simulacrum of the outside world. We have it so we can run simulations and outcomes without actually being 'reported' and judged in reality.
Anyway, i thought it is interesting. My theory is that psychedelics allow us to update these integrity models which usually maintains its integrity by being outside of our control. Since it's usually lagging behind our developing worldview and needs.