They did say more.
I can agree with you there.
Some of what they said has been deemed irrelevant to the investigation, while on the otherhand, the speech tone and/or intonation imparted may in itself provide some additional clues. The BEA have in IMO avoided making those calls, as to do so would create further dispute over the rights or wrongs of such judgements.
Patience is a virtue, and the criminal trial programed for sometime in the future may eventually establish a little more about the situation in the cockpit that night, not that it will ever change the substance of the BEA's Final Report.