Claiming that verses have no connection to each other is like claiming a chapter of a book has no connection to the other chapters.
Each chapter, scene in a movie, or verse in a song, is a discrete unit. However, they work together to tell a larger cohesive story.
Maybe you skipped this unit in your literature classes?
Chapters, scenes, or verses are not random. They're not organized haphazardly. They're constructed and structured to tell a story. They use targeted language to communicate specific ideas and emotions in a certain order to accomplish a goal.
Like in the Princess Bride. That's a love story. Yet, Wesley never says "I love you" to Buttercup. Not once. Does that mean Wesley doesn't love Buttercup?
Clearly, that's not the case. He does love her. But how do we know that? Because of all the things he overcame to be with her. He became a pirate to survive. He dueled the world's greatest swordsman and won. He wrestled a giant and won. He went up against a Sicilian when death was on the line, and won.
Not even death itself could stop Wesley from being with Buttercup. He defeated death too.
But never once does he say, "I love you, Buttercup." By your reasoning in this thread, he cannot possibly love Buttercup.
Yet we know that he loves her. We were just shown a collection of scenes that were put together in a specific order with the goal to tell us a love story.
And when the little boy asks grandpa to come back tomorrow and re-read the story to him, what does Grandpa say? Does he say, "I love you"?
No. He doesn't say that at all, does he? He says the line that was only spoken by Wesley 4 times. With those words, you know how much that grandfather loves his grandson. He never says it. Not once. But you know it.
3 words I have never written here but you know them. You know the line. You can hear it now, can't you?
Do you see how I did that? How I planted 3 specific words in your head without ever once putting them here?
So, when a man stands in front of a court house infamous for a lynching. And he sings about how you shouldn't "try that" in a small town, and tells you that if you do 'step out of line' you'll find out. Then tells you about his grandpa's gun.
An imaginary grandpa who might have been alive during that lynching.
It's a threat. No matter how much you want to pretend it isn't. If he and his "gold ol boys" don't like you, they'll kill you.