My friend came back from California after going to college and thought Hawaii driver's were terrible.
After moving here and driving here on and off for 20+ years, the only thing I ever noticed about local drivers was a certain lethargic nature. Mostly, far more courteous and likely to open a space in traffic to let you move over or merge.
California, where I spent far too many decades, it was always "f*ck you, me first!" You learned not to let too much space open in front of you on the freeway, lest half a dozen cars wedge into the space. Even had a CHP officer admit in traffic school that the old rule about speed and safe spacing meant you would be going backwards before long the way everyone jumped into a gap.
It could be hilarious, if you were dumb enough to put your turn indicator on for a lane change, to watch the turkey in the next lane speed up to close to gap and block you out. In Hawaii, they slow down to make it clear you are safe to move over.
You learned about BMW and MB drivers early on there. Here, they are just other drivers, not entitled @ssholes. Again, sluggish, maybe, bad manners, no. And I did spend four years commuting in Honolulu, hating every minute of it, so I know the worst of it.