That’s not a given. Nobody here is talking about outright bans on all vehicles. Limited access for taxis and commercial use is a thing. Buses can be built with wheelchair access. Etc.
And with less space reserved for cars and only cars, there’s more space for wide/accessible sidewalks. Less chance of being run over by a car. Less air and noise pollution.
Well if you have less space for cars, parking spots are more expensive as a result. In Paris it's around a year of living wage. And currently, sidewalks are getting smaller due to the need to build bicycle lanes.
My initial post was that in Paris, they removed cars but did not improve public transports, so buses are overcrowded and hostile to strollers.
And with less space reserved for cars and only cars, there’s more space for wide/accessible sidewalks. Less chance of being run over by a car. Less air and noise pollution.