The overwhelming majority of medical treatments don't have inteligent humans actively trying to maliciously sabatoge them. Many drugs can be made horrendously lethal or otherwise dangerous with little effort (often just by significantly increasing the dosage) but we don't need to care very much because it's not possible to silently untracably apply that effort from arbitrarily far away, and there usually isn't anything to gain from doing so even if it were possible.
At the end of Mickens' talk he suggests putting black box devices behind smart firewalls and routers. I'd say that's the equivalent role of doctors.
That is, the trifecta of bad decisions is black box functionality connected to an internet of hate (or unfiltered/tested input data) and given levers of power in society. Take away any one of those 3 and you're probably ok.
