It wasn’t atypical. There is a record of Airbus pitot tubes freezing up and flight system crashes. 20 plus. There was a program in place that was replacing them.
Both the icing conditions and the failure of heated pitots were not what pilots encounter on a daily basis. Thus atypical.
Rare occurrences = atypical.
The pitot issue DID happen too many times and thus the AD to replace them.
Btw, I did watch the Nova video. We don’t *know* what happened so keep in mind they may have indeed flown into the Q-corner.
I hope the wreckage speaks volumes.