I had a quick read of the report conclusions and there seems to be an assumption that it is normal for the autopilot to drop out due to UAS. I can understand that the autothrottle requires airspeed reading, but a 3 axis autopilot should not require airspeed and does not on basic aircraft.
So if a Beach Barron suffered UAS, the autopilot would keep flying the plane giving the pilot a chance to work the problem.
Could not Airbus design a plane so that full control does not need to be passed back to the pilot should any input data including airspeed be incorrect? It would be easier for the crew to work the problem if partial automation was maintained.