Good grief . . .
Let the dude have his fun. It's annoying when everybody else knows better, especially when you know they've never been in the positions they warn against. "Don't actually shoot somebody, don't advertise that you have guns, if you do shoot somebody take that sign down, don't act like you're mean, etc. etc. etc."
"Anyone found here at night will be found here in the morning!"
Best,
Rick