It isn't about whether the AOA's were faulty because they weren't. No fault nothing to detect. Something external to the sensor affected them.
This is why accident investigation must encompass more than the flying aspect.
The aircraft had been painted and washed. This involves following strict procedures for good reason. You can affect sensors in an unpredictable way.
Just as pilots have procedures which must be adhered to so does everyone else.
The aircraft departed and for quite a bit of the flight everything was fine, then something happened to 2 out of 3 AOA's. The AOA is an extremely reliable sensor so 2 behaving badly at the same time is unheard of. This needs investigating. It isn't about my input is more worthy than yours, its about finding out what happened here and what happened involves more than just flight crew.
Something was technically wrong with that aircraft, we need to know what and why otherwise it will happen again.