I'm 30 now and so seldom if ever am I blasting music out of the car with all the windows down, but I was also 16-24 years old at one point, so I get it. That said, blasting music in residential areas was something I never did and always came off obnoxious. It's inconsiderate. To be mad at the next man for playing his music loud would be hypocritical since I also have been there and done that. Hell, I'll even shrug off loud residential traffic when it's high noon or early evening, but it's goofy to be blasting your speakers in the AM. Most people aren't doing that in neighborhoods because they love the sound system or the track that much. They're doing it to be seen and the harsh reality is nobody that doesn't already know you doesn't care about you or your favorite song like that.
I've lived in a gated community for the last three years and some change in which you need an access code to enter so I don't deal with this much, but there are teenagers that live out here that will do it. Our regular delivery drivers from USPS/FedEx Express/UPS have the code. I only started seeing Amazon drivers within the last year out here and they have a bad rep but none were blasting their speakers and they seemed just as cool & courteous as the others.