And I think this is quite understandable, and not really about "war on drugs", it's about corporate responsibility.
Many companies are taking some flak for supplying completely legal chemical substances to the public (say, sugar drinks).
This means logically, you have to ignore the preconceptions, because they have no basis in reality, just your biases.
A reason that has little to do with recreation and a lot with altering brain chemistry.
It ultimately comes down to the concept of personal responsibility. Drinking does not absolve one of their subsequent actions and choices, regardless of their subsequent "mental state". Any choice to have an "unsound mind" was made while of sound mind, and thus responsibility for all results lie with the person themselves. Being mentally impaired doesn't magically transform someone into a blameless zombie.
Colleges seem to be doing their best to erode this concept, but I digress.
What isn't right is things such as the doctor telling Sandy that obesity is "primary genetic". Even if the statement is scientifically correct in a narrow context, it functions to absolve Sandy of responsibility for solving her own problem - whether it be by dieting, seeing additional doctors, exercising, or all of the above. Heck, telling her husband "I am fine with my weight" is in this same category of self-actualization, although she must accept others' inevitable reactions.
As for my comment, I certainly wasn't meaning to advocate "personal responsibility" in the sense of "let them suffer". In aggregate, addiction should be addressed as a public health problem. But that doesn't mean we should absolve the individuals of responsibility for their own actions because their brain has been chemically altered. This is what I was getting at, because that junk reasoning is used to justify inebriated behavior as nobody's fault, which is then used to justify a sweeping bans on altering one's mental state.