Disagree. Much more societal harm comes from the supply side (cartels, street gangs) than users, and much of the harm for/from users goes away if prices adjust to what they actually cost to produce (a tiny fraction of street price), and if the products are lab tested for potency and purity.
Little bit of a straw man there. Nobody said they weren't different things.
The promises of the legalize-marijuana crowd have not become true. There is still crime revolving around marijuana in CA, it's more expensive than it was before legalization, and the tax revenue is a drop in the bucket for CA.
So all we "gained" was a bunch more people using marijuana...