I had the same thoughts, but am far from an expert.
It’s just that people starting out..not knowing what to look for, when they post up suspect objects...typically there is a very short “sorry natural stone, keep trying” response, followed by several additional variations of the same.
Helps a little bit, but doesn’t pass on much knowledge.
I have learned just about all of my limited knowledge about artifacts here (and google searches spawned by discussion here) and am thankful.
Look forward to better understanding ancient man.