Lots of theory!
Lots of talk about lots of stuff... Facts:
Unreliable airspeed , if aircraft flight Jeopardised , ap at fd off. No more no less
Then
Stall recovery( if you put it there)...
Lower attitude
End of event.
Simple , problem solved no crash no dead people.
All the rest is academic , a bunch of folks died due to failure to fly the aircraft
And transit a temporary anomaly.
I sympathise with the loss of life , but the race to the bottom in flight training must be to blame at the core of this and is due to airline, manufacturers race to the lowest flight training cost base possible to meet min regs only.
It will only get worse with MPL.....but that is the future.