Why? What does it do to further his argument? What does he gain? Consider the reasons why someone would choose to unconceal their firearm. It shouldn’t be a fashion piece to just show off.
For any number of reasons, the most obvious and likely of which is that he was simply emphasizing his point about carrying a weapon for self-defense. The least likely and most ridiculous reason, the one you seem stuck on, is that he was threatening a group of kids.
Why? What does it do to further his argument? What does he gain?
Why don’t you spend some time applying some of that critical thinking to why he would threaten a group of kids?
I’m pretty much the same. Cats are terrible creatures and I would never intentionally own one. But I’m not going to hold it against my partner’s two cats that they are cats, so they get scritches and nap times with me.