I mean you can already see the two competing contentious narratives, "It was Boeing's equipment and training manual's fault" vs. "it was the lack of air carriers' training and experience standards", and everything in between...Which I guess is the age old question of manufacturer vs pilot error. Which is likely to be a combo of both, likely multifactorial.
Ironically France also has some potential conflict of interest here, as manufacturer of Airbus, but still probably best choice with I assume several safeguards added.