I've taken substances of various schedules legally and otherwise before, and I've never heard of a doctor writing a prescription for methamphetamine. I really wonder if they have it in stock at my local pharmacy.
Look, this is what I'm driving at, you appear to have some illusions that methamphetamine is significantly different than other amphetamines, or has some higher toxicity profile, more addictive, IDK I'm trying to get you to tell me your biases.
At that point, we can go look at the clinical literature and see what the evidence is.
Yes - why, as your own source says, are amphetamines prescribed at 4,000 times the rate of methamphetamine? Is there no reason for that? Why does the medical system have such a bias?
As with meth, typical medical applications of cocaine don't involve smoking it (source: Wikipedia).
Legitimate US suppliers for smokable cocaine do exist, however, e.g.,
https://www.sigmaaldrich.com/US/en/product/sigma/c8912
In stock and available for shipping today* **!
* “This order may require review prior to shipping.”
** “DEA License Number required at checkout.”