It's not thorough at all. It is completely one sided and ignorant in it's premises, it's false equivalence and it's misstatements of the facts.
It did not at all explore what would have happened in the absence of a "war on drugs". We don't have to guess. We only have to look at what happened to China.
100 million dead because China lost their war on Drugs. Generations impoverished and suffering. Societal collapse and weakness. *THOSE* are the legacy of not fighting a war on drugs.
Did he mention China? Well then he's either ignorant or lying about the results.
Any fair analysis of the issue *has* to mention what happened in China from 1840 and subsequent years.
“China”
Until 1909 you could walk into a pharmacy and buy opiates and cocaine legally in the USA. And you could buy jars with Cocaine and Heroin labels to store the purchases.
Legally required prescriptions for ordinary drugs came about around 1948 because of Democratic pharmacist and Senator Hubert Humphrey.
And the famous soda Coca-Cola used the original formula for decades.