I think the camera choice for any photography has to be one that will deliver the results the artist wants. And one which the artist is comfortable using in street situations. Leica's with a 35mm lens were used extensively by many of the best street photographers. But, no reason you can't use other cameras that work for you. I've used a Fuji 645, a Nikon FA, Mamiya 7, EOS 1V, and several others. No matter which I use, I try to have a lens that I can operate from inside the action zone. I want to be on the sidewalk, not 50 yards away. But others prefer the anonymous style of long lenses. To each his own vision.
Regardless of type of camera, you need to be able to operate it on instinct and very quickly. If you need to fumble with stuff like menus, or tiny buttons, you will have trouble getting dynamic shots. Time is measured in split seconds. Many people that used rangefinders would zone focus them for this reason.
I think long tele shots tend to look static and have too much compression. That's just my taste. I'm currently using the Fuji X Pro 1 for everything now, and that means street too. It's not the best I have used for street, but it is very workable. I do miss some shots with it because of focusing flubs, but not too many. It also has too many precious buttons that can be hit. On the plus side, the IQ is better than any camera I have ever owned.