The switch is not novel, that is in fact exactly how autopilot works for any aircraft. The pilot toggles it on and off and the autopilot itself may turn itself off if certain situations occur.

To your point, that isn't without problems, but it certainly isn't novel. It is very standard and boring.

I would bet this is pure marketing speak and there really isn't anything special here. "Follow this flight plan and do so within this flight envelope" is pretty straightforward?