I disagree. If you look again at the pictures, you will see that the subject is not car owners and their cars but rather people trying to move independently from their mode of transportation. If everyone is entitle to access an autonomous vehicle, then at any given point, you will need as much car as there is people. Despite the fact that some of the same people are not in a car but waiting for one. With personal car when the car is not used, it is kept away of the passage. Where an autonomous car, especially when use as public transport, will roam around town, clogging its arteries while empty.
You can reduce the problem by having the car stop for new people until its full (some countries taxies does that) but that’s not how the solution is sold to us. Self-driving car is sold as a way to keep moving in a five-seated vehicle even when along and having the vehicle kept driving even when fully empty.