it has to be done by authorities for it to mean anything. otherwise its just another grassy knoll theory..
Just because someone in authority doesn’t do it, or doesn’t say it, doesn’t change the physics of sound or ballistics.
Lots of “authorities” claim that human activities are having a disastrous effect on the planet’s climate. Their position doesn’t make them right. And the scientific evidence is against them - for those who can understand it.
This is why I tried to drill into my kid’s heads how important it was to know as much about the hard sciences as they could - so no one in authority could pull the wool over their eyes due to their ignorance.