Most people don’t care how they get around as long as it’s convenient and we’ve made the least efficient means of transporting people the default.

I agree, and I would also argue that focusing on car travel makes every other form of travel less convenient.

Because you have to battle the collateral damage that car infrastructure causes: grid lock, unsafe intersections, parking in bike lanes, the massive space required for parking lots, the noise and air pollution, the excess wear on infrastructure, danger to pedestrians and cyclists, etc...

Lessening car dependency makes other forms of transportation safer and more convenient as a side-effect.