I think it's because there are some hidden assumptions going on that the author just needs to come out and fess up to.
One, that drug companies should look at shipments per town as being an indicator of problems.
Two, that by shipping drugs, drug companies are causing the epidemic. They may be profiting from it, they may support legislation to make it worse, but it doesn't take millions of pills to get hooked. This is a result of additiction, not a cause of it. You shut-off/slow-down the pill flow, you just create a bigger black market. Addiction is a natural result of using opiods to treat pain. It is not caused by too many pills.
Three, that drug companies are the only people with agency here. Surely there are doctors, pharmacists, nurse-practitioners, ministers, social workers, and a slew of other people in these towns that are exposed to this problem every day. Many of them assist in the problem, either directly or through studied ignorance. This is a complex social problem with lots of players. Simplifying it to "evil drug companies" dumbs the problem down to the point of being intractable.
I'm not sure this article educated anybody as much as it made them upset. I'm struggling to find something useful and positive to say about how it could be improved. I sure don't want drug companies using some kind of statistical process control to determine who can get pills or not. That's whack.