Or even worse, "it's a sure-fire one way trip to an early grave via hell. Winners don't do drugs. Just say no." It hasn't gone away, people continue to go to jail because of this belief.
Beyond that when the idiocy of such claims are laid bare and it is evident that it was an insane, designed to scare, mountain of evidence-free lies "for the greater good - if we save even one child...", people stop believing what is said by "authority" on a kind of wholesale basis. Can you blame them? "Weed is a healthfood" isn't really much worse than the just say no truth disaster. People made money out of both sets of lies as well.
The pandemic really laid it in stark relief the amount of "authority propagated claims" that were actually wholly evidence-free and the lack of critical assessment of evidence by such authority (remember the "masks don't work, can't be transmitted through the air" line sprouted by people in white coats with PhD after their name claiming "the science"? Be they WHO, Fauci, NHS and all the rest of them?) We all actually had to go and do all that assessment of evidence and probability for ourselves because the authority was both lying and incompetent. No doubt many of us got our assessment "wrong" in avoidable ways if the highly trained had not also decided to "lie for the greater good" and merely stated what was known with the appropriate estimate of its certainty. [1]
It's always a mistake to knowingly tell lies leaning on the podium of authority, the interest always comes due and the rate is more than just unreasonably steep.
How bad is this one going to be? The incarceration level is bad enough by itself.
"What's the evidence for that?" When this provokes anger rather than being directed to published results, it's time to be /very/ suspicious. There hasn't ever been a reckoning for those who claimed authority to repeat lies, demanding their resignation at the minimum seems appropriate.
[1] https://www.wired.com/story/the-teeny-tiny-scientific-screwu...
Decades of trained and qualified anointed robe wearing doctors and scientific researchers believing and repeating something in a textbook, copied from another textbook which got it from a grandparent textbook and never actually asked "what is the evidence in support of that? Where are the studies and replications?" It's really sobering. Do you think the places where you go indoors have updated their airflow accordingly yet? Do we have government minimum standards in building codes yet or even "in the pipeline?" Will you believe "authority" next crisis?