"How many times do we have to prove [that stimulant ADHD medication improves health outcomes] before doctors and governments stop treating the stuff like poison?"
Proof is irrelevant: medicine is a political power structure which systematically fails people on its supposed purpose every minute of every day, not because it is doing that job imperfectly, but because it is lying about its actual job. The people it systematically fails, the people it systematically kills, are on purpose.
Yeaaah...
*gestures vaguely in the direction of this horror story*
There are compromises over every medication at some venture, it's not like they're "risk free", but rather, "managed risk" decisions. During the 1990's we handed out Ritalin to over-active kids who were hard to manage or had oppositional disorders. This is basically how we did a lot of shit in psychiatry: behavioral management sedation. I have a few horror stories about how the methodology of sedation looks over time, if we put a pin in the political component here and focus on just the pragmatic application.
This as usual for me goes places not really intended but definitely connected, so read on if you're interested in how being shitty as an industry reinforces being shitty as a government which then makes everything worse :3