However I think it's worth at least mentioning that both airlines and aircraft manufacturers have a vested interest and significantly more resources to put behind demonstrating that pilot error is the primary cause of any accident.
For instance in this case you have... • poor training (pilots unprepared for alternate law) • possibly poor UI (de-coupling of controls, insufficient communication that aircraft had lapsed to alternate law) • small-scale systems failure (pitots)
vs • incorrect response and continued failure to understand aircraft attitude (in turbulence, with no visual cues, in a situation which 'fooled' three pilots)
...which makes it an interesting one for manufacturer and airline to definitively defend, but I would guess that they can and will absolve themselves from liability.