True, but at least in the 60’s and 70’s most stimulants were legitimate medications. Amphetamine, dextroamphetamine and methamphetamine were widely prescribed and diverted into illegal channels.

There was a “scourge” of truckers taking uppers and driving all night. Stimulant use was really rampant across all social classes. Use decreased when prescriptions were cut off, then meth resurged in the 90’s.

And the other data point is methamphetamine use is the drug of choice in much of Asia. But you don’t see anywhere near the social problems you do in the US.