They are informative programs that follow the script of the investigation report very closely but lay out in such a way as to make it very understandable for the lay person. The air crash investigators themselves always take part and give their first hand knowledge.It is ghoulish to derive entertainment value from them. If the details of a failure are determined, communicated and rectified then that is the end of the matter.
No more needs to be done.
Turning it via dramatisation into a spectacle is profiting from the victims.
What value does it add to safety to inform you in your armchair that a screw gear failure led to the separation of a horizontal rudder? Accident reports are usually available online and can be read. The outcomes and findings are communicated to the appropriate parties in order that remediation occurs.
To hope that the tragedy be recreated for TV is rubbernecking of the worst kind.
People's lives were. The industry will learn from the lessons derived in the accident report.
I am sure if they thought it was ghoulish rubbernecking they would not be involved , they see it as a chance to educate people as to the work and methods they use.