I think the claim is, pot is not considered bad solely because of a PR campaign.
https://spectator.us/big-dope-marijuana-benefited-slickest-pr-campaigns/
Concluding:
As the legalizers seek to extend their many triumphs, the comparison they dread most is the one with Big Tobacco, once as all-conquering as Big Dope but now at last in retreat. Yet their product also ruins the lives of users and their families. And it kills. Often very terribly. Will this realization come too late to save us from a grave mistake?
Edit:
But, wait! There's more!
https://www.theamericanconservative.com/dreher/second-thoughts-on-pot/
While a lot of the negative-biased article is science based on studies we've read (But, dismissed for some reason.), there is a bit of anecdotal "evidence" that illustrates the focal point:
UPDATE: A reader writes:
I’m a reader of your blog and an ER doctor, now in [small town] but trained and worked primarily in [major city]. I read your post on marijuana and psychosis/violence just before starting my night shift tonight, and my first patient (in [small town], mind you) is a psychotic young woman who recently assaulted her fiancée with a broken shard of mirror. [The patient tested negative for every drug but cannabis.] I can attest that this is quite common.