My "real" airline flying experience amounts to two hours' circuit training in a 737-800 Level D simulator shared with a colleague. Whilst he was flying he momentarily took his eye off the ball whilst turning final and the speed gradually decayed to around 135 kts (VREF 141kts). I was scanning the speed and announced "watch your speed!" - power applied; end of story.
Now if two duffers with zero experience can manage it (in the middle of the night) why can't an experienced crew with three or four captains on board!
We can sit and pontificate about airline procedures, no ILS, PAPI switched off etc etc for another 50 pages but the fact is this aircraft should not have been stacked on a beautiful clear day with little wind!