in S.E. Michigan - this is not the case. the more affluent the suburb, the more unfriendly and entitled the drivers are.
the more working class, the more tolerant the drivers. i still think it's related to how close the lower income folks know they are to being on a bike.

here's a problem i'm having: my township put in bike paths under the power lines (good). they put in really well marked cross walks for the bike paths, since the paths cross roads where there's no intersection (Great!). there was a decent media campaign to get the word out about the new intersections (outstanding!!).
Now, when i am using the paths, i will check traffic to see if i can avoid hitting the button to cause a red light. if i'm all clear, i roll through without hitting the button.
A lot (not all) drivers are STOPPING without the cross walk light being red, trying to wave me on. but that's traffic from one direction, so I can't roll. then they get mad, and as soon as the light turns red for them (green for me) they hit the gas and take off because they were watching me NOT go.
good times.