I believe Medical Rights fall under Human Rights.
i.e. Police can't take prescribed medication away for a reason.
You are both correct. Health and Security of the person are potentially Charter as well as Human Rights under the provincial human rights acts.
But that doesn't have anything to do with the plant count under the Cannabis Act. That's purely a Constitutional jurisdiction concern.
This shitty thing about that is that such litigation is expensive and takes time. Yes, Quebec and Manitoba's ban on home growing will be struck by the courts. But somebody is paying money to do it and it takes time to wok its way through the courts. The provinces know this. They are deliberately being obstructionist dicks about it anyway.
The matter is less clear when it comes to a province purportedly introducing a possession limit in a dwelling house. The Cannabis Act does not put in a limit. I think, however, a fair way of viewing is that there used to be a limit where you could have ZERO, and the Federal government removed that restriction through an amendment to the CDSA -- which the provinces are now trying to put back in as a provincial matter. For that reason, new restrictions are not permitted. Probably.
Changes to public possession limits, which have also been legislated in Quebec (reducing from 30g to 15g) are plainly unconstitutional as well under the paramountcy doctrine.
Quebec's Act also bans possession of any pot within CEGEP grounds. That's probably unconstitutional as well, but the courts might be inclined to find a way to save that one, if they can.
Bottom Line: We'll be a while sorting this all out in court.