I would agree with that list. NYC, Boston, and LA are all MUC MUCH worse than the Bay Area in terms of rude drivers. Miami ranks first but I've only been a tourist there, transported around in buses and tour shuttles, or walking straight to the beach from my hotel....so I've never actually been in the thick of traffic there to judge.
I think Bay Area has more stupid or timid drivers than rude drivers. If anything, I think people are more clueless here than rude or impatient. I see people who don't pay attention to lights, who back out of parking spaces without turning their head to see what's behind them, break for no reason, or they merge into lanes way below speed of traffic, causing everyone to brake. I
I'm probably one of the more impatient drivers around and think people drive way too slowly in non-pedestrian zones, stop way too early for a yellow light, take way too long to merge into lanes, are too scared to make a quick turn or lane change, and too often insist on following or driving under the speed limit.
Ranking high on that list might mean you're in the middle of a lot of driving hazards but it also means that people are more efficient (impatient) and you can count on the person in front of you to not waste a second during a green light. Whereas here, I have to wait 3-4 seconds sometimes for a driver to respond!
Cleveland is #19. Not surprised. My sister lives there and has gotten ticketed twice for driving over 25mph on an open, carless road!