With respect, I remember it a bit differently. I think the consensus was that in theory it's a good idea, however in the case of this particular accident the crew missed so many cues from the instruments they did have that having an AoA indicator on top of those likely wouldn't have made much difference.
It is too easy to crucify the crew for "missing so many cues"
Instruments were providing confusing informations for the 3 min the airplane was fully stalled.
A simple AoA indicator would have told the true story with
consistency from the highest point to sea level. Maybe just what was missing to both copilots and the returning captain to properly analyse the situation ...