Nope BB, it ain't just a SoCal thing and it isn't limited to scoots only. Had to chuckle about your frustration as I encountered my daily ration of a no-mannered, self important, phony piece of dog chit yesterday while stopping at my favorite service station (one of the very few left in this portion of FL not manned by a refugee from a camel rest area). Pumped gas in my pickup, went inside to pay and stopped for a moment on my way out to say hello to the owner when I heard someone laying on the horn. As if I couldn't have guessed a new BMW 7 series with NY tags was parked behind me occupied by a little pr#@*k of questionable origin wearing one of those "catch me f*&k me caps" on backwards stabbing the horn. Proud of my unusual restraint, I got in the truck and started backing up with the extended hitch post aimed at the perfect target between the Beemer grills. Couldn't help but laugh as Mr. Wonderful started smoking backwards right into the bucket on a parked track hoe repairing the sewer lines. Trying my best to be helpful I mentioned to the new stunt driver that he may want to unplug his horn until he once again crossed the Mason Dixon line. Successful anger management.
You're right on your choices of retirement area. Most of the deep South still trades an a$$-whoopin' for poor manners and no respect for your personal property.
Me, I'm on the countdown.....48 days and a wake up until the escape from the a$$hole magnet.