Here is a summary with a link to the PDF: https://bigthink.com/health/carl-sagan-on-smoking-marijuana/

Weed leads to more open mindedness. Why bother using it as an opiate of the masses when you have actual opiates. Push those instead while throwing anyone who has touched weed into the private slave system for superprofits.

There's already plenty out there to keep a population complacent. Also, the prison industrial complex and all that surrounds it is big business.

Can't win em all. Also, weed in the UK is rubbish /s

If you are as smart and educated as Carl Sagan, I’m sure weed isn’t doing the heavy lifting.

Maybe weed isn’t relevant in that case, let’s not forget that in the US, weed was promoted by liberals and opposed by the MAGA crowd.

what's wrong with being content and finding peace? The productivity drive has been driven into you by capitalism and leads to mass discontentment and suffering. One must detach from endless striving to achieve true enlightenment and happiness, and weed can do that and chill people out and cure them of their "protestant work ethic" which is a cultural disease.

Inherent in this type of "weed makes you lazy" rhetoric is that it makes other people lazy. You want everyone else working endlessly and tirelessly implicitly here, that they must face endless burden for your benefit. It's a form of social control where you are attempting to force your values onto others instead of respecting their right to chose what they do with their own body and life.