All equipment on the plane has a potential for failure... the question is what systematic design and pilot training is in place to take action in the face of failures.
In air sensors like this, their failures are higher than the rate at which you can ignore. They fail on their own, they get bumped and bent on the ground, they ice over in the air, or have objects striking them.
If the design in itself, and the subsequent factors of safety are at fault, pilots can’t recover from that fast enough. Why put them in a dangerous situation and expect them to recover. How long could this go on even if we didn’t have these two plane crashes. The pilots/airlines could be at fault for not training too much but the bigger issue is the system in the question.
It’s like saying the drivers don’t know how to drive because the manufacturer didnt put it front and center on the driver’s manual that the car suddenly swerves right. As ic drivers should always have their hands tight on the wheels and be ready for situations like that. It’s not fair.