Why are you trying to make this into something that the article/thread isn't about? Perhaps you should start a new thread on this very subject? I am just say'n.
If I had my druthers, I don't want them driving impaired at all. And, for the record, I am 14yrs sober.
I mentioned the off-topic issue because you mentioned one as well. Marijuana usage itself is a victimless crime. You’re conflating it with impaired driving which in itself is already a crime in California and will likely always remain a crime. Even if marijuana is legalized, it will still be illegal to drive under the influence. Do I think that everyone will obey the law? No. But people don’t obey it now, so it’s not really relevant to the issue of marijuana legalization/criminalization, which is what this thread is about.