This op made me chuckle. I can’t comment on the medical aspects, but my own experience is that heavy smoking (cannabis, gear, whatever you call it) made my former partner highly aggressive, and violent. He’d spend the evening (and a fair part of the day) smoking heavily and then hit me, bash my head on the floor, shout at me and the kids, etc.
There was a very clear correlation: cutting back led to a significant diminution of aggression, in fact he was good company, sensitive and sensible, and we had a relaxed domestic life whenever he gave up, then his getting started on the gear again invariably left me with a black eye, hiding in the spare room from his shouting and beating on the door, trying to protect the children from his outbursts, etc.
It seemed to unleash a torrential bitterness and hatred in his psyche, and feed it.
But then he had a family history of severe cannabis psychosis, so maybe he was just unlucky genetically.
So overall, no, I don’t think the path to feminist utopia will be smoothed by any mind altering substances. Unfortunately!
There may be good reasons for legalisation, on balance I’m probably in favour, but the suggestion made in the op as far as I’m concerned isn’t one of them.