It's one of those "out there" types of opinions for sure, but I can see where their sentiment is coming from.
Addiction is just such a broad sweeping term, and most often quite subjective. As well as the frame of mind that an addicted or depressed person would be in, makes it difficult to take what the patient wants at face value and to just go with it.
People are fallible, including our doctors, so we need to ensure the system is set up appropriately, with little to no room for varying interpretations.
If there's anything massive corporations have taught me, it's that vague or poorly written laws and regulatory bodies will be exploited if they can be.