I think people see what they want to see. Current Zeitgeist is pointing towards approving use of pot for recreational purposes while ignoring all the risks or even discrediting anyone saying the opposite.
I deeply remember one episode from my adolescence when another kid smoke a large amount of pot in the basement and suddenly started yelling: "Dragon, I see dragon!" while having his eyes open in an expression of fear for a few hours.
From my point of view, pot smoking is another horrible idea such as cigarette smoking - it annoys anyone who doesn't smoke as the air quality deteriorates and damages both active and passive participant's health. Moreover, certain parts of population are prone to damage their brains as well as compromise their will, instead running away to "lalaland" whenever they face any challenge. There is a saying in Frankfurt nightclubs that you can't build a business on stoners and some nightclubs had to close due to having their business deteriorating due to unofficially allowing pot inside. Similar to crack cocaine in Rio de Janeiro when the drug trafficking favelados decided not to sell it anymore as it was killing their own customers and business.
As a professional photographer I can see what drugs are doing to my models - you have a world-class awesome beauty with a great personality one year, and the next year a train-wreck with horrible changes to physiology and likely involved in escorting business.
In other words, I see the movement to legalize pot as another insanity in progress. And we think humanity is evolving...