First, the author is completely wrong. There IS such a thing as cruelty-free cocaine, here and now, today. It is higher quality than virtually anything you can get on the street, no one dies to make it or ship it, and it's considered extremely useful by it users. I know, because my doctor packed some into my nose after nasal surgery a few years ago.
It is not the drugs, or the drug trade, or the users, or the manufacturers. It is the War on Drugs that created this horror show and made it what it is, Just like Prohibition made Al Capone infamous and rich. If there was no War on Drugs, everyone would just buy from the same people who supply doctors - pure, reasonably safe, and cheap. No guns, no violence, just a packet you buy in a drugstore or a liquor store like anything else, and there's medical help available if you get addicted or overdose, just like for alcohol. These horrors, these evils, are 100% created by busybody government bureaucrats who arrogantly assume they have a say in what people put into their own bodies simply because a majority of voters told them to.
"It is indeed probable that more harm and misery have been caused by men determined to use coercion to stamp out a moral evil than by men intent on doing evil." - F.A. Hayek