Probably not likely. The pilot sent a manual signal that they were near black cumulus storm clouds. Probably structural failure from severe turbulence...but who knows for sure at this point.
AIRBUS inc. would be better off if it was a bomb.
If the “plane” sent 3 minutes worth of distress signals automatically, it indicates that the plane was flying for 3 minutes after some kind of catastrophic failure.
Years ago there were heated discussions on this forum about the composite materials and structural design of Airbus planes. Some pilot freepers thought the Airbus was inherently inflexible and therefor dangerous. I am not in a position to verify the truth of those ideas, I just remember the conversations. Sure would be interesting to be able to find them and see whether this kind of thing was predicted — has any passenger jet ever “broken up” due to turbulence before?