A significant amount of the newer pilot group have never used rtow charts at JQ other than the training module when they started. (Currently being revisited!)
JQ are not alone with this. As modern flight decks across the world move more towards EFBs, the art of interpreting chart data is becoming lost.
Global eduction systems are also moving towards electronic learning. The generations ahead may never have the opportunity to interpret paper charts and graphs as previous generations before.
As for this flight, final leg of a long duty, last minute aircraft swap, pushing curfew. All the risk factors are lining up. What a time to need to dust of the paper charts that you’ve probably not looked at since your last line check.
The old saying (modified for polite language) - put bad stuff in, get bad stuff out.
An Airmanship lesson from this would suggest pulling the paper charts out every now and again. Lots of time in cruise to discuss with younger crews.
GEC - wise words indeed!