Considering only tobacco, I'd assume he is an outlier. I'd assume so because of the many quite intelligent people who started smoking before the Surgeon General's warning, tried to quit after it, maybe eventually quit after a dozen years of work, maybe never did.

Back during one of the big buyouts of ca. 1980, an executive of KKR explained why it was buying some cigarette company: You make it for a dime, you sell it for a dollar, and people are addicted to it.