Maybe I'm wrong, but I really want to be able to mostly correctly presume that the average HN user over the age of like... 20(?) probably has vague knowledge of the fact we don't understand the mechanism of things like acetaminophen (Tylenol) and most anesthetics...
Furthermore, most chemical engineering/pharmacy students learn that with today's regulations, acetaminophen would've never been approved. Do we think that's a good thing? I don't.
That said, I still very much agree with the parent poster's view.