Although not an (air) pilot I was an engineer. This one is entirely on the engineers. The AoA sensor was replaced the day before the fatal flight. I really should not have to expand on why flying passengers on a plane that has exhibited multiple critical failures of an unknown cause is a bad, perhaps even criminal course of action. This was being treated like a lemon car at a dealership is often treated -- "well, try replacing the sensors and see if that helps." That can be a bad idea even for a passenger car (and has led to lawsuits when the car crashes) but when you have hundreds of lives thousands of feet in the air it is beyond unacceptable. Even though the likes of Microsoft and Apple seem to have forgotten it, there is a thing called "testing" which you should do before a fix goes live. It is very easy to make things worse.
It was probably a bad wiring harness, and no amount of new sensors will fix that.