I fear this is now going badly for AI and all who promote FBW and the 'protection' offered by multi-redundant systems and software.
IF the a/c had been thought to have broken up at high or medium level due to 'exceptional' turbulence' then Force Majeure could have been declared.
As it is, barring some unknown other structural failure (HS or forward section separation?), it is looking as if all these 'protections' didn't. There is the bad news for a 'failsafe' design.
I sense this will reverberate heavily.