That's not really accurate. Boeing is under continuous attack by hatchet jobs like this that insinuate they cut corners and are solely responsible for these accidents.

First, we don't have final reports from the investigators yet, so it's awfully early to point the finger.

Second, every major aviation accident is multi-factorial. It's never just one failure that causes it.

If it does turn out to be the faulty AOA indicator causing the electric trim to go nose-down, there are still a number of other obvious contributing factors in addition to the faulty sensor.

The public is demanding low airfare prices because they are getting squeezed by the increasing disparity of wealth worldwide. Wages are not rising as fast as prices, and as the cost of doing business with China slowly rises due to the trade war, prices start to creep up and the squeeze increases.

Airlines respond by flying pilots with lower time and lesser training, paying them less, and working them harder.

Pilots spend less time in the simulator working on abnormal conditions, and while they are undoubtedly great at monitoring normal flights and navigating controlled airspace, they have less experience hand-flying approaches and dealing with rare equipment failures and emergencies.

Every pilot should have adequate simulator time to be competent with every emergency procedure for which there is a checklist, but that is not the reality. The three seconds allotted by the FAA to diagnose critical systems failures is simply not enough if you can't find and execute the correct checklist in that time period.

In the old days, every single pilot from a Cessna 152 on up knew exactly what a badly trimmed airplane felt like and how to fix it instantly. When you felt that extra force on the controls, you would instinctively rotate the trim wheel in the direction of the force that you were needing to apply.

Same for electric trim systems: if the force doesn't ease the way it should, you have a runaway and you need to interrupt power to the electric trim system.

But that is hand-flying, stick-and-rudder-type stuff. If you're not getting the hand-flying time and the simulated failure time, you just don't develop that instinct.

It's not entirely Boeing's fault that an aircrew can't recognize and counter a runaway electric trim, no matter what the details in the flight manual. It's only reasonable to assume that basic level of competency.