@lauren Yeah my understanding is that public perception of the safety of mercury saw a pendulum swing from too little concern to too much concern. And a similar thing applies to public perception of everything from lead through radiation.
And I'm sure there is philosophical disagreements within different parts of society as to whether they should be aiming for accurate public regard or rather feeling that maybe it's okay to err on the side of making people extra cautious, even if that means a little fibbing.