@Flagon
Sorry, that's not the answer in my opinion - my point is that aircraft with stick pushers have been monitoring AOA (and AOA deltas side to side) for a long time now. One would have expected that those types would have been seeing AOA anomalies.
Part of the story may be that FBW aircraft are more "exciting" and so get more "press" - witness the enthusiastic discussion on these forums of the details of FBW implementations, compared to people asking about gain changers and non-linear gearings and such! So the AOA anomalies on FBW aircraft are better known.
I do agree that the more complex systems are difficult to get "perfectly right". I will say that no-one designing and certifying these systems is in any illusion over this complexity and its implications for the design - bold statements about how great a system or aircraft is coming from the mouths of marketing/sales people don't always reflect the opinion of the engineers. Any engineer releasing something is of course confident he's done the best he can, but any good engineer also knows nothing is perfect.