It's not _only_ that, it's also the fact that the failure mitigation was not catching it, so even if they "fix" the random spikes issue, they still need to consider the "what if" issue if the thing _still_ happens. My money is that they will mitigate this:
"There was a limitation in the algorithm used by the A330/A340 flight control
primary computers for processing angle of attack (AOA) data. This limitation
meant that, in a very specific situation, multiple AOA spikes from only one of
the three air data inertial reference units could result in a nose-down elevator
command. [Significant safety issue]"
It's the only one marked "Significant safety issue" so my money is on that.
"There was a limitation in the algorithm used by the A330/A340 flight control primary computers for processing angle of attack (AOA) data. This limitation meant that, in a very specific situation, multiple AOA spikes from only one of the three air data inertial reference units could result in a nose-down elevator command. [Significant safety issue]"
It's the only one marked "Significant safety issue" so my money is on that.