Usually refrain from responding to obnoxious idiots, but just in case anyone who does not know better comes across this nonsense:

Racial and Ethnic Differences in Cannabis Use Following Legalization in US States With Medical Cannabis Laws
https://jamanetwork.com/journals/jamanetworkopen/fullarticle/2784528

"Findings
In this cross-sectional study analyzing repeated yearly surveys of US adults conducted from 2008 to 2017, living in a state after enactment of recreational cannabis laws was associated with increases in the odds of cannabis use..."

Did Prohibition Really Work? Alcohol Prohibition as a Public Health Innovation
https://ajph.aphapublications.org/doi/full/10.2105/AJPH.2005.065409?url_ver=Z39.88-2003

"Death rates from cirrhosis and alcoholism, alcoholic psychosis hospital admissions, and drunkenness arrests all declined steeply during the latter years of the 1910s, when both the cultural and the legal climate were increasingly inhospitable to drink, and in the early years after National Prohibition went into effect."

So basically everything pothead idiot just wrote is simply not true. Legalisation of cannabis has led to increased use, and prohibition worked remarkably well in terms of public health outcomes.