The phrase "drugs and alcohol" (used 100-eps% of the time) in common speech implies a separation of alcohol from "drugs", the latter being a worse category.
This "distinction" is like saying "meat and beef", i.e. no distinction at all. I'm mostly preaching to the formal system choir on HN, I just don't think I'm being out there saying the phrase "drugs and alcohol" is no accident in trying to distance alcohol from general drug use. The name Marijuana itself was deliberately made up to have negative connotations [0]:
> The use of "marihuana" in American English increased dramatically in the 1930s, when it was preferred as a "foreign-sounding name" to stigmatize it during debates on the drug's use.[12] [13] The word was codified into law and became part of common American English with the passing of the Marihuana Tax Act of 1937.