I think it’s more than that. I think there’s an attitude of playing the music that loud. I think there are some that are doing just to see if anyone will say anything. Again, this goes back to the “respect” issue in many of today’s urban yuts.
I’ve said things to people who had loud inappropriate music, but not in cases where I didn’t have a pretty good control of the circumstances and cover of other people. And then it was because i could tell other people were bothered (parents with children), and I was able to do so by pointing that out and being sympathetic about it, so the perpetrators understood I was just pointing out something they may not have seen.