A “reasonable person” in a cockpit is not the same as a “reasonable person” behind the steering wheel.
Pilots undergo rigorous training with exam after exam they must pass.
No one is handed the keys to a Boeing 747 after some weekly evening course and an hours driving test.
I don't mean a reasonable pilot. Would a reasonable person expect autopilot in a plane prevents a plane from crashing into something that the pilot was accelerating towards while physically overriding the controls. The claim is that autopilot should not have been able to crash even with the driver actively overriding it and accelerating into that crash.
To me, it's reasonable to assume that the "autopilot" in a car I drive (especially back in 2019) is going to defer to any input override that I provide. I wouldn't want it any other way.