But to be fair, New Englander's are terribly impatient. Many of our ideas of road etiquette include: no loitering at a light for more than 0.25s after it turns green. And "yellow means speed up."
Though FSD does navigate onramps and off ramps better than autopilot did (I don't know how autopilot works now since I'm on FSD beta now).
With that said, though, I don't think you can buy just autopilot anymore.
My other car is a Volvo and using Adaptive Cruise Control with Lane Keep Assist is scary as heck, any more than slight turn in the highway and you have to correct to avoid leaving your lane. Tesla on the other hand can change lanes, and has no issues with even the most extreme turns in the highway. But off the highway FSD is definitely more stressful than just manually driving while it's in beta.
Never driven in NYC, though I have walked through it as a pedestrian... it seems easier to deal with.
With that said, I hate driving in Boston, so much so whenever I go there I park outside the city and take the T (subway) the rest of the way. I would not turn on FSD in Boston in a million years.
I live in a mid-sized city much smaller than Boston and it does "ok" but even there I take manual control when downtown.