The obvious and fundamental problem is
That Autopilot, is not an autopilot.
If it was called something else the level of scepticism and the gap between expectation and reality would be substantially narrowed.
Based on the issues described, even if you still have hands on the wheel AKA normal cruise control, it can make unexpected decisions so quickly even a human can struggle to correct it in time.
It is an interesting technology but does not work well when roads and other human drivers are not (and probably cannot in all cases) be optimised for fully automated driving.