4. Every 737 pilot in the world reads about the Lion Air crash and becomes keenly aware of exactly how to react to an MCAS problem, possibly to the point where pilots might take incorrect action when a non-MCAS failure occurs.
Whatever happened here, I would be shocked if any 737 pilot would be unable to recognize and correctly react to MCAS failure just 5 months after Lion Air showed them what not to do.
In theory, I agree with you. However, I ventured over to airlinepilotforums.com, and there are pilots disagreeing with each other over what the right corrective action is when MCAS issues arise. This does not make me feel good that there is a clear, consistent course of action, and I'm not willing to risk that I'm on a plane with a pilot who takes the wrong action.