Draws a crowd? Part of the message only. Stories like these generally cover much more than a singular issue like popularity. I see also the article demonizing certain cartels as part of the message. I'm not claiming the drug cartels are good guys by that statement. I'm claiming that the cartel pushing for prohibition of certain narcotics creates the black markets. Meanwhile the guys making some drugs illegal approves and sells their own drugs, which more often than not get used for the same purpose as what they prohibit.
I didn't read the full article because the headline describes itself as "one possible theory". I'm sure I could find other hidden gems in the full article, but today I lack the time to dissect and absorb a new conspiracy theory (not intended as derogatory).