In 2019, Oakland effectively voted to decriminalise mushrooms- a progressive move for a city with a long history of punishing its black residents for drug use. Now some black residents are using them to heal from the racial trauma they deal with in everyday life.
Psilocybin as mutual aid is going to be a powerful force. /r/unclebens is the easiest growing technique and will give you a large enough surplus to gift without thinking about the cost.
This is the marxist answer. The state exists to reproduce the social hierarchy, and the contradictions caused by capital threaten that. So state actors must work as "crisis managers" to prevent the working class from realizing these contradictions and overthrowing capitalism. One of the easiest ways to do this is distracting the public with cheap comforts, a la "bread and circuses." Psychoactive drugs seem like a great distraction from the miserable alienation of working life.
IIRC before the Temperance movement it was common for employers to provide booze during the workday (as part of the pay) and to pay people in it outright for similar reasons.