Oh good grief.
Territorial marking. I control this place, I’m making it unpleasant for you, and you haven’t got the guts to do anything about it.
Remember the boombox days? There were headphone devices then too. Why carry a twenty pound boombox on your shoulder when you can bass-blast your brain privately? Territory.
The old guy should have gotten in his car and rolled the windows up. After all, how long does it take to fill your tank.
From reading the article, this sounds more like cold blooded murder to me.