Disproof of “Those who can’t do, teach”?

The news headline “Professor Who Wrote Book on Drug Crime Is Accused of Money Laundering” seems to refute the old joke that “Those who can’t do, teach“.

The report, from Bloomberg News, on November 18, 2019 begins:

A Miami professor who’s an expert on drug trafficking and organized crime was charged by the U.S. with laundering money from Venezuela, skimming more than $250,000 for himself.

Bruce Bagley, 73, a professor of international studies at the University of Miami, was the co-editor of the 2015 book “Drug Trafficking, Organized Crime, and Violence in the Americas Today” as well as a contributor to various journals on the topic.