Not in all jurisdictions, as you are aware. Marijuana may represent a successful test case that might translate to other areas. But most people don't see marijuana as any more addictive than alcohol, so it may not translate for the seriously addictive illicit substances.
Again, it shows us the benefit of ending a war. I don't have any expectation for it to curtail usage. That is just a happy byproduct. Marijuana and alcohol abuse must be targeted by effective methods. And you will never end it completely.