There are more choices than the extremes. But if those are the only choices offered, the citizenry may simply prefer more pollution over reductions in productivity or convenience. That's not an irrational choice, unless your prerogative is that there's no value in personal transportation, which is extreme. I see that a lot, and it's a first cousin of the "if it just saved one life" argument, which erroneously assumes…
They didn't block all personal transport, only most no-local vehicles. I would be a lot more convinced by the pro car arguments if they debated the actual issues. No one is saying destroy all cars and roads, the argument is on the importance of the car in the general transit system.
I'm not personally a fan of how much the US prioritizes car transport, but I do see the utility of personal transportation.