Your point about banning cars being ideological makes somewhat sense, but must be contrasted in regards to actual numbers.
- EV share in greater Paris area is only 3%, far from being high enough to impact air quality. Overall, the effect of removing cars on air quality has been noticed and celebrated.
- parisians are overwhelmingly in favor of banning cars. Unlike big american cities, car has never been a dominant transportation tool. Paris subway was already built when the first massed produced cars made their way in the capital. Cars have never been part of the soul of any neighbourhood people wanted to live in.
- paris has one of the highest population density in the world: 20k hab/km^2, ranking 31th in the workd. As consequence, parking space has always been crazy expensive, on top of high rents. Similarly for travel time between two locations: I can’t imagine a car being faster (except late at night, for night club and bars), and I try to avoid Uber/taxis intra-muros. Furthermore, a single noisy vehicle is estimated to be able to wake-up up to 150k (!!) people at night.
- a large part of vehicles are actually… taxis and uber for wealthy tourists than don’t want to bother with public transportation. In that regard, pushing away cars frees space for housing, parcs, shops, making the city easier to live in.