What it meant was, if you work at a place with all the cash controls of a casino, you have to be stoned to steal petty cash from them. You’re going to get caught, and you’re going to get a felony over a small amount of money. Nobody sober does that.

It was not meant as “all stoners are thieves” but as “you’d have to be high to think that’s a good idea”. And since nearly everyone who works at a dispensary is high all day every day, it happens, a lot more than armed robbery which almost never does.