Well, RL, I don't think that someone that wants to hear the growl of an engine, would necessarily be considered 'stuck in an adolescent rut'. I'll agree with you on the blue headlight issue. Yes, they can be tough on oncoming drivers, and the vehicles that shake neighborhoods, with the beat of rap music, are obnoxious to say the least. I also wouldn't really appreciate a 4Runner with the lowrider bouncing air shocks you suggested might be next.
BUT, there are a lot of mature people out there, that consider the sound of an engine's exhaust, music to their ears.
I can't imagine going to the auto races, and not hearing the beautiful sounds of those engines.