I just so happen to live down the street from Disneyland and I find this guy just wanting attention. Seriously, even though fireworks went off at 11:30 and if he really does live there, he would be use to it. For years, Disneyland would often have random events that have the fireworks go off later than the 9:30 usual. I did hear it last night (I was up doing HW) and it didn't bother me or anyone else around the neighborhood (my parents were sleeping and they didn't even notice the sound). I've lived here for nearly 6 years and I have gotten use to the random "booms" and just automatically know that it's fireworks.
BTW, I don't even like Miley. ;)