The problem is, most people believe something they heard somewhere, source forgotten, usually original source unknown. Things get passed around the Internet and who knows where they actually came from. I get 10 bits of spam a day from well meaning relatives trying to tell me "what's really going on" out there. Once a bit of datum gets lodged in the brain it's very hard to dislodge it. All one can do is what you have done. Present actual facts and hope it sticks.