Successful people learn when and how often to enjoy what life has to offer and still remain successful. What was meant by "regular pot smoker" is up in the air, but I interpret that those who smoke a bit more than they should, in the same way you can do that with alcohol (or sex, or food, or HN, or whatever, and still remain successful)

I know some successful people who smoke occasionally (by occasionally I mean 1-3 times a year). Yet, most seem not to do it at all.

Nobody's ever lied about use of a drug with great stigma.