And here is a really good article, supporting your point.
Although I still think that the author is getting tangled up a bit with their cause-and-effect analysis.
The opioid epidemic can pretty much be traced right back to the doctors who over-prescribed them in the first place, and thereby transitioning opioids from "street drugs" to "my doctor gave it to me, so it's safe!"
Once you make that mental leap, sharing "prescription drugs" with others - or selling your extras, or prescribing it for people who are simply addicted - becomes a really easy justification to make.
The big picture is that, where we are now, there is no easy path to the light at the top of this hole.