The author is attempting to ignore that by placing alcohol and marijuana on equal historical footings with his sentence, "Pretend for a minute that humankind had not discovered alcohol until Drexel distilled it in 2000".
Not the same.
I did---see my post #7.
Alcohol has a history of use in the US (add cooking, an area I forgot), whereas marijuana doesn't.
So what?
No, you are trying to equate alcohol in a form that can be ingested and intoxicate a person with alcohol in the form that if ingested, would kill the person. The author is not ignoring anything; your specious argument is irrelevant.
"History" is not a justification for inprisoning certain people for ingesting a certain substance, and not inprisoning others for ingesting another substance..