This is a well written and very interesting report at several levels. The captain was a management pilot with a lot of experience, and there was another captain in the right hand seat. We all know two captains is not always an easy situation and being pilot monitoring from the wrong seat as a senior colleague completely loses the plot is a tricky situation.
Airbus has fundamentally changed flying and in normal operation the aircraft is a delight to fly. But when the unexpected occurs it can be a real handful. The lack of tactile feedback on the thrust levers and sidestick of the pilot monitoring are real issues.
Fortunately nothing worse happened than the management pilot (probably) writing himself a severe reprimand. But it is a classic example of where the man machine interface can go wrong,