Earlier quoted context omitted.
I live in a suburb of Philadelphia. I find the original description absurdly accurate. I don't drive/have a car and it is crippling.
It depends on the suburb. I could see myself living in someplace like Manayunk without car, but I suppose that is sort of pushing the meaning of "suburb". Some of the towns along the Main Line seem fairly livable without a car (For a time I did the opposite, living in Philadelphia and working in Radnor), but that doesn't seem ideal. Some of the other towns along the Main Line are definitely as he describes.
Transportation alternates are also highly variable and make a huge difference.