How is someone going to be compensated for their creative work if anyone can come along and just make copies of it? Copyright prevents people from just making copies of other people’s work. You want to do away with copyright, thus removing that protection and severely hindering the ability of anyone to make money from creative works.
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 don’t you spend some time applying some of that critical thinking to why he would threaten a group of kids?