I'm in agreement that some cities are better than others for good street work, but every city has areas that are good for the kind of work (at least some of the time). I grew up in Chattanooga, TN, and while I'd hardly call that a great city for street work, I have some shots that I still love from weekends shooting on the Walnut Street Bridge, one of the longest pedestrian bridges in the world. Not much to get on a weekday, but great on a summer weekend. With any city, you just need to know where and when to look.
As for the attacks on American cities as all looking the same, the distinction is pretty clear to me: a city that developed after the advent of great public transportation is always at a disadvantage. In the US at least, cities that developed with cars in mind do tend to feel similar. But New York isn't the only good city in the US. Boston, DC, San Francisco, and Chicago are all really good in my experience. Having lived in Chicago for five years, I can refute claims that the city is a dead zone for street work. Yes, the Loop is dead after 5 on weekdays, but much of the city is vibrant well beyond daylight hours. And Wrigleyville on game day is always wonderful for street work.