The only thing that does not look right are the four reds on the PAPI's. However their calculations show them to be right on profile and the black hole effect makes them feel like they are on profile. They continue the approach in spite of the uneasy feelings they have about the PAPI's. While they discuss what is wrong with the airport systems they are unable to see the dangers that lurk around them. Before they can do anything else they have hit some trees/powerlines and it's game over.
Completely feasable but if true there is no logic, no conversation other than G/A once visual 4 red is seen @ said altitude. Other than cloud cover leaving them below DH or a critical altitude.