

Drugs are bad. Don’t use anything addictive or too mind-altering. I think even regular (daily) consumption of coffee is bad but it’s one of those things that under capitalism I suppose I understand as a kind of necessary evil.
Mind-control MKUltra drugs which encourage frivolous hedonism, individualism, magical/irrational thinking are of course a weapon of the enemy and often directly fund them and their proxies as well. Escapism would not be a needed thing under socialism as well, they are at most a crutch and I am very suspicious of those who advocate their use. This person you speak of is not a Marxist and may well be a fed.
Sadly the US is an old master at front companies and re-routing logistics. They bought all that titanium from the USSR for their SR-71 and other advanced warplane projects through an elaborate network of front companies. So it will mildly increase costs but not stop the US from getting what it wants if any significant amount at all is made available to western companies.