Those arguing the "bad system" design case ought to consider the fact that they weren't arguing the case prior to the event. You can't claim ignorance of the architecture.
Thats the whole point!
In lieu of the brace of other system cues, the AT logic emerged as is...
(The choice in this case seems pretty stark? Decouple from the GS and CFIT, or remain coupled with the GS, and stall!)
We stand on the shoulders of those who have gone before us.
Those wondering how common events where failing to notice airspeed decays of "large" magnitudes occur might like to ask their Chief Pilot/Flight Safety Pilot the answer to the question?
Those who reckon they've never failed to spot something simple during their mandatory proficiency checks are a statistical rarity. I find the finger pointing pretty hypocritical...
What do we learn/want to achieve here on out?
More training. 3 days re-freshers? Better CAT D sims. A requirement for all the previous 2(?) weeks Tech Log entrys to be made accessible to the crew on a one page precis...