Taxiing up to 30 knots in straight line is part of the everyday operation but I’ve never felt hitting something even would it be a wall could imply so much destruction. All the photos reveal a phenomenal energy dissipation and I would easily conceive the speed and/or thrust was much higher than 30 knots and/or idle thrust.
Nobody yet dared to comment on the fact that obviously the three Main Landing Gears took an in flight status for a while ?
There is even a possibility here that the protections played another unconceivable trick :
If the turbulences were able to lift the tail up they could be well able, in the same time, to disturb the Angle of Attack censors and set them beyond the ALPHA FLOOR threshold which would have triggered the ALPHA FLOOR protection by applying TOGA thrust.
A lot to consider … Let’s see if anyone is willing to comment ?