I don't think that the issue in this case is as complex as some are indicating. You basically need two things immediately when performing a go-around - a positive pitch attitude (initially around 15 NU for this aircraft) & lots of thrust. This guy knew he needed those two things. He pitched the aircraft NU & 'called' for the power by pressing TOGA. What happened was an over-reliance on automation caused him to miss the fact that the automation had not delivered what he wanted. He wouldn't have got FD commands either, he was obviously used to setting a target pitch & going from there. Perhaps he was just starting to realize that he didn't have FD commands for the GA when it all started to go wrong.
He seems to me that he knew how to fly the required maneuver. He was just too trusting of the automation.