Confiture, if one tries to program the robot to once again interfere with the flying of the aircraft for that exceptional case, the risks that the code in question causes a serial or unrelated error is non trivial, when you are discussing what is being done to over ride a pilot's input to Flight Controls!
In the case of Alt Law 2, it appears that A330 control logic allows for the chance that the robot is wrong, since it already notes some odd signals or sums already, on the way to degradation. That's a conservative approach, and one to my liking.
When degraded already, if the stall warning goes off, but the pilot makes "input x" in certain modes, the robot will apparently concede that most likely, the pilot knows best since it knows something it uses for control is wrong already.
I am more comfortable with that than the alternative, even though every so often the pilot is wandering off the reservation.
That's part of why airline transport aircraft have two pilots.
Redundancy of wetwear has proven to be of value for some decades.
Saved my bacon more than once, in a different environment.