As I mentioned in passing in my article, the medical world finds it easier to think of an overdose death as the mechanical result of too much of a dangerous medication, and has trouble balancing that against deaths where socioeconomic factors, and mental health, and personal decisions all contribute. The latter get discounted because there are so many contributing factors, even when the epidemiologic evidence is overwhelming regarding whether access to certain drugs has led to net increases or decreases in fatalities (much less quality of life concerns).