I can't believe that this drivel is still going on....
Face it. The 2 co-pilots porked up in spades. The PF's agricultural flying commanded the THS - it did what he'd erroneously commanded. He then failed to understand that he'd stalled the aircraft through incompetent handling.
Poor system knowledge, lack of awareness and no idea of basic principles.
But why on earth the captain decided to go and sleep before the aircraft was clear of the known serious weather forecast for the route....
Air France arrogance and their unwillingness to face the consequences of inadequate training on a complex aeroplane seems to me to be a contributory factor.