> Self-driving vehicles need aircraft-type maintenance.
That's a hyperbolic false equivalence.
Aircraft typically carry hundreds of people and can crash to the ground. As long as a self-driving car can detect when it is degraded, it can just stop with the blinkers on. Usually with 0 - 2 people inside.
The question is how broken can a car be when dispatched. What's the safe floor? See the other article today about a Tesla getting into an accident because of undetected sensor degradation.