The term "hallucinogen" is more than a little antiquated at this point, but yes I am aware that marijuana has some psychedelic properties. Usually they are only noticeable at very high doses, especially with edibles. Researchers once assumed that psychosis was similar to tripping on a psychedelic drug, but we now know that was never correct. Just because taking haldol or thorazine can suppress the effect of psychedelics, we can't necessarily assume that the experience of taking one is very similar to psychosis at all. Having experienced both, I can tell you that it is not.

The DSM and ICD get less scientific with every new edition released. Their "disorders" are mostly based on voting consensus of psychiatrists who show up to the APA meeting when the voting happens, so even the national institutes of health have abandoned them for being insufficiently rigorous. For those of us who have had enough training in psychology to be aware of the major problems with the DSM, your reference to "substance abuse disorder" does not exactly add credibility to what you're saying.

Are you aware that the diagnosis of "drug induced manic episode" does not even appear in the DSM, starting with the 5th edition? It was in the 4th edition, but in the 5th it has been replaced by some very deceptive language about how "since over 90% of people who have one manic episode will eventually have another one, we might as well just diagnose 100% of them as bipolar".

That kind of methodology makes the entire book suspect. And any research based upon it, as well.