To put a finer point on the matter, the FBW/Conventional argument will never die so long as two or more people miss the point. The point is: either, (and both) types perform quite well, and the safety record doesn't suggest anything else. 757s fall out of the sky when a hornet makes a mess in the #1 pitot, and 320s experience a problem with discrepant AoA vanes.
The salient concern, imo, is the interface between the a/c and the Pilots. Whether the downfall is mistaken reliance on pitot or AoA, or a lapse in airmanship, the question remains, How well does the airman know his a/c, and its characteristics of flight in challenging domain, regardless the challenge. Did 447's crew rely on a/p too long?
Is that a human factors/training issue? Here, did the FP perform incorrectly? These aircraft are not sentient beings, they are complex machines, machines that deal out dreadful consequences when operated in less than correct ways. "Blame" as apportioned to the mechanical, seems almost completely unwarranted in any one of the recent outcomes.