I don't think so. Broad scope social engineering programs have multiple consequences, all intentional. Just because there was an intentional benefit to Prohibition (alcohol as fuel), doesn't mean it was its primary purpose.

I think its primary purpose was to remake our system of law (procedures and interpretation of laws, lawyers, judges etc.), the penal system (a MAJOR industry and eugenics program), police procedural system, etc. Because alcohol was illegal, and because no one actually wanted alcohol to be illegal, everyone became a criminal. All the criminal activity caused all of these systems to get new rules. These rules were created by Rockefeller by the Brookings Institute in 1926 (a Rockefeller created think tank), and then, in 1932 (or 1931?) by the government. But the "government" used the exact same system designed by the Brookings Institute. First Rockefeller paid the Brookings Institute for this program (through the Rockefeller Foundation), then the tax payer (through the government) paid for a second system; the one we got as law. This "government system of laws" written in 1932 give it legitimacy, but they used the exact same system created by the Brookings Institute (they were written almost identically) and they employed the exact same people both times.

But Prohibition went beyond just the creation of our current legal system. It was instrumental as part of the ongoing creation of the current health care system fraud and "Health Insurance" (AKA social health care). It was also an essential part of the Great Depression, which was a major component of the decades long Theatre Play,, part of which was WWII. The Act we call "WWII" had as primary purposes the creation of the State of Israel, creation of a One World Government (UN, WHO, and associated programs), and the creation the "Cold War." The Cold Was was, imo, the greatest Act of the Three Act Play we call "The Matrix" (or if you prefer :"The 20th Century"). (Both the USSR and US were both controlled by Rockefeller.) It was the most important Act (imo) because it was through the Cold War that they created the current version of The Matrix. In The Matrix, through the Cold War, 99.9% of the population of the planet became NPCs.

Prohibition was a long term planned event, designed to do all of those things. "Alcohol as fuel" was just a happy additional benefit; taking economic advantage, nothing more.