The time-scale in which a tesla driver must react to it failing is 10s or so to under a second, not 30s.
If this happened anywhere that policy and law said it was okay to use autopilot then you would see changes in the policy, and fault laid on air traffic control at minimum, and then the scope in which autopilot could be used would be massively restricted.
If boeing had advertised the feature for use at low altitude in congested airspace and written the training with that in mind then most likely someone at boeing would be criminally at fault.
