It’s a very stupid mentality born out of fear. I had a conversation with someone on reddit once in the comment section for a news article about a child (5 year old) finding a gun in the bushes. Her reply as a gun owner was “I’d rather live in a world where 5 year olds can find guns in bushes than live in a world where they cannot”.
It blows my mind. These folks are going to end up killing their children in a case of mistaken idenity if they’re not careful (and they aren’t careful).