This poses a confirmation bias issue though, no? People obviously taking marijuana and sitting around: something you look for because of the stereotype/expectation, and relatively obvious if you’re around them. People doing activities not stereotypically associated with marijuana: less obvious.

Unless they are publicly consuming it (which I suspect is a bit rarer due to restrictions on and stigma about consumption in public), how would you count people who aren’t engaging in expected stoner behavior?

I don’t have a dog in this fight or suspected conclusion. Just seems like it might be harder than you think to truthfully assert “everyone knows most people who take pot just sit around”.