There is no reference to FADEC in the quoted AOT
Indeed. However, we can think of FADEC as a "function". That function resides in the engine's electronic control unit (ECU). Many other functions also reside in the ECU, like thrust reverser control on jet aircraft and prop control on turbo prop aircraft, bleed air control, engine inlet anti-ice, etc.
Separately, it appears that the ECU related AOT is unrelated to the accident. According to the Aviation Week article cited below, a different software controlled system that auto trims fuel in the fuel tanks cut off fuel to the engines. FADEC cannot compensate for fuel starvation.
Another tidbit revealed by the Aviation Week article clears up earlier (false) speculation in this thread about who died and who survived the crash.