It seems to me you're putting too many equal signs between things like schizophrenia, religious (in particular, mystical) experiences, altered states of consciousness including the drug-mediated ones, and the bicameral mode of thinking.
Not all unusual mind states can be fit into the bicameral mold.
To make me understand your model and objections, please tell me which statements specifically you agree or disagree with; or rather how much likely or unlikely you consider them. (So that I don't argue for a statement we both happen to agree with.)
If it's worth saying, but not worth its own post (even in Discussion), then it goes here.
Notes for future OT posters:
1. Please add the 'open_thread' tag.
2. Check if there is an active Open Thread before posting a new one. (Immediately before; refresh the list-of-threads page before posting.)
3. Open Threads should be posted in Discussion, and not Main.
4. Open Threads should start on Monday, and end on Sunday.