As a former B737 driver ( some decades ago ) I followed the Ethiopian Airlines fatal accident in Beirut in 2010. The cause of the accident was pilot errors. The Lebanese accident Investigation board suggested that Ethiopian Airlines look into there crew composition ( experience ) and CRM. Being it MCAS or any other cause of this accident, as a former B737, Airbus and currently a Boeing driver I have the sneaky suspicion that crew composition and CRM played a major role in this accident.