Pilot Error?

This annotated Flight-Data Recorder Transcript from Air France 447  (from Popular Mechanics) makes it clear that the real problem was an egregious control system design flaw which seems to defeat the main purpose of dual controls and prevented the more senior pilots from realizing what a panic stricken junior was doing. It also seems to me to represent a bit of  a counterpoint to what happened in the Korean Air Lines tragedy where a junior co-pilot was too polite to contradict the misunderstanding of his more senior colleague. Here the two older guys just didn’t seem able to grasp the fact that, despite perhaps still sounding normal, the young one had completely lost his senses.