Yeah, another old wive's of the gun world dying. No worries. Good practice to wash your hands before and after.
I read an article that was pretty interesting last week that talked about how the firearms industry is just a huge game of telephone. So many people believe so many fallacies since there is 1. No regulation from the feds and 2. Those who got an early start got to set the rules.
You see guys like Enos come along and totally flip the script on handgun shooting at speed and now, no-one really questions it...but there are still some things to learn. The script he flipped was, in large part from larger than life Cooper, who did much of the same thing.
Tubb, end of last century changed so much. Now we have Litz and Saterlee and others that changed a ton in the last few years in precision rifle and reloading.
We have all these little spheres with disciples and good intentions, but so much got passed down verbally, and changed over time. The AMU has helped a lot and today, really, a good amount of what all the Alpha males think, or thought they knew about shooting is being challenged, refined and retooled. Those little spheres rarely interact since most are only in one discipline with any amount of effort.
Many of the "authors" who have written reloading manuals and books are most focused on reloading and less on the shooting. The shooters are more focused on the shooting and not so much on the reloading. Isolated expertise that fails to cross pollinate, challenge, test because, in large part, they do not interact.
I still run across people who have never heard of the Houston Warehouse. Or those who believe that all of the "recipes" in the load manuals were actually tested with pressure equipment. Or that if a powder is not listed for a certain caliber it must not work with it. That cleaning rifle barrels all the time is necessary to maintain accuracy.