This quasi-statistic (which I will take at face value), while interesting from a sociological perspective, does not actually inform individual decisionmaking. It's a thinly veiled way of saying to someone "you can't be trusted to handle a gun/knife/whatever properly" - which, even if true for the majority of humans, is an incredibly offensive and patronizing thing to say to someone. And may just get you punched in the face, which (if it so happens) suggests that you were probably wrong about the individual in question.