Since you're asking me that question so directly, I'll tell you that in my opinion the home-growing provision is one of the worst pieces of the current legislative draft, for several reasons. I think it's a very bad idea for public health, because we should not rely on private homes for the production of psychoactive substances.
Second, there are adverse potential health consequences to other people in the home—everyone in the home, as a matter of fact. This includes a lot of non-users, but also vulnerable people like children, parents, or spouses.
Third, it's probably the safest way to ensure possible diversion of cannabis from what is otherwise supposedly a regulated and restricted market.
Fourth, the home is probably—unfortunately, the former Toronto police chief is not here anymore—the most difficult environment for authorities to control and regulate, at least in our society.