I've never been sure which way the causation goes (if any), but I've known three people so far who had psychotic breaks after an intense mushroom trip. Similar to what you wrote - a sudden obsession with conspiracy theories and/or intense religious persuasions. Something they all had in common was being very confident and self-assured to begin with, which makes me wonder if it's particularly risky for those kinds of people? They all recovered, fortunately.
