Excellent analysis. Not sure it's 100% true but it sounds good.
Not sure why, but I don't run into many moronic drivers. The occasional person that follows too close before passing or cuts back in too soon but I chalk that up to poor driving skills, not aggression. Maybe it's the open-carry gun laws in AR.
I've been known to pull next to a car that looks good and give the engine a few revs just to say "Hi!" Nice car." - usually accompanied by a wave or thumbs up. I've gotten a few "vroom vrooms" back but nobody took it as a challenge to race (if they did, they ignored it).