There a massive gap between “all cars should be banned”, which you seem to be replying to, and “some urban areas should be allowed to densify and operate without cars if their citizens want that”.

That's true but it seems like the people advocating for policy on both ends don't understand the difference in density and therefore transportation needs between Boston and Boise. Everyone wants policy to be a state or federal level cudgel these days and quite frankly that is stupid.

I live in rural Japan and own a car. However, I lived here without one for over 5 years. My apartment building is surrounded on 3 sides by rice fields, so it gives you an idea of just how rural it is. I can walk from one end of the town where I live to the other in 20 minutes. In that space there are 3 grocery stores, 2 hardware stores, a butcher, 2 fish mongers, 1 tofu shop, 2 flower shops at least 5 barbers, 3 doctors, 2 optometrists, many bars, restaurants, cafes, etc, etc, etc. I moved from suburban Canada. In 20 minutes I wouldn't be able to walk out of my neighbourhood of cul-de-sacs lined with identical houses. Not even a single convenience store. It's a commercial waste land.

In rural Japan, cars are used. In suburban Canada, cars are necessary. There are definitely more rural areas in Japan than where I live. I live in an actual town. If you are up in the mountains, or live far away from a town, a car is probably necessary. However, for the vast majority of people who live in this country, it is not.