AF crash is still partly a mystery because the actions of the most junior pilot are completely incomprehensible. He caused the initial stall for no understandable reason, then corrected it, then caused another, and when the First Officer understood the problem and tried to save the plane, Bonim kept pulling the yoke back making the FO efforts fruitless.
It's very weird. It's like if a surgeon started doing random actions in the middle of a simple surgery instead of performing how he has trained for.
Something like a minor stroke perhaps? Complete disorientaton? Even the later doesn't justify some of those actions.
This dude makes some interestibg recreations of major crashes, using Flight Simulators and data from the CVR and flight data recorder. The videos are short and very informative, providing a more dinamic and real time understanding of what's happening than just reading.
It just doesn't make sense why that stick is always pushed back. At least in these 737-MAX we have an understandig of what leads the pilots to do that wrong choice. In the AF you just can't.