You’re right in your argument about “just do this” suggestions without considering how hard it can be based on intrinsic factors.
I feel there is a point in the thread you’re commenting on though. It would be scientifically interesting to know whether the desired(positive) outcomes of this drug can be replicated by consciously controlling the quantity or quality of food without the use of the drug(by those who can). Still, presenting the result in a useful way rather than stating the drug is useless.
If you had a way to get the same results without any pharmaceutical intervention, and you’re a lucky one that _can_ do it, wouldn’t you want to know how?