What's the havoc exactly? From all the people interviewed, the ones complaining about the smoke on their way to the office seem to be losing most productivity...
That's certainly one story, but the more plausible one is that people who are more productive --and have more productivity to lose-- are less likely to smoke marijuana. Equivalently, marijuana smokers are generally less productive.
I don't know about that, I did multiple degrees and I'm working on a PhD and I smoke and use edibles all the time. I know other people who are similar.
Almost like cannabis use is independent of productivity and the lazy stoner stereotype is a drug war myth, weird huh