I held off posting on this thread, for a long while.
First off, may those affected in this crash rest in peace.
The following is a bit of opinion, and in no way meant to impugn the character of anyone. It is an observation.
Experience:
Things have changed dramatically in the last 10+ years in gaining flight experience.
4000 hours TT represented a lot more actual flying experience back in the old days than those 4000 hours mean today.
It used to be that you built your time instructing, flying cargo, charter, anything that you could do just to get to at least 1200 hours so that you could go to work for an IFR 135 operation, where you would build more experience. This was all done in aircraft that did not have a lot of automation. You actually flew the aircraft, as such building up a level of airmanship. The "commuters" as they were called were flying turboprops that had no autopilots at all.
So, what we have now is people with minimal flight experience getting into heavily automated jet aircraft. Building flight experience now is usually and nearly exclusively behind an autopilot. There is no bank of actual "flying" experience or development of airmanship. What you have now is not pilots, but system operators.
Everything is fine in this scenario until you have a breakdown of the "system" (aircraft automation). If you do not have the requisite skills to actually fly the aircraft, the results can be dramatic. The lack of that bank of knowledge, that real world flying experience can be a severe detriment in its own right. This is what we are seeing more and more of now.
It gives me deep concern.