This seems equivalent to someone buying a hammer from a pawn shop. Upon authorities finding out that hammer had been stolen or used in a crime instead of charging or investigating the Pawn Shop owner, they charge the person who bought the hammer because they made things with the assistance of "stolen goods".
Used car / firearm / AI-assisted-code / other-example-here
We are only 'pretty sure' of the mechanism of how Tylenol works biochemically as of 2025.
You can test for effectiveness and dangers and everything else you need to prescribe something to get a good idea of whether its actually doing something or not.
'Alternative medicine' is largely, "I felt better after a bit".