ABIW,
Hope you weren't driving!!
You are missing the point - everyone else on the crew complied with the requirement.
It was only the Captain who failed to comply; which then brings us to the next point which is that ALL Flight Deck crew (except Air Engineers) attend Met Brief. Well, how many did?
Then, because of time constraints, it was the ALM's from the other crew who had to supervise Baggage loading and Passenger Briefing for the Flight. I infer no blame whatsoever to the ALM's who were only doing their best to assist the Crew doing the Task. One has to ask, however, why this was necessary.
Proper management of assets against tasking could have prevented the short notice "Crisis Management" solutions which are a feature of the final sortie of ZD 576.