"Safety Brief"
I wonder how many pax would have looked at the safety card and listened to the safety brief rather than rudely and more importantly, dangerously, ignoring things and continuing to read their paper.
The "safety card and safety brief" have nothing to do with safety. Apart from the seat belt stuff which every car occupant understands, the rest is an emergency response procedure, which the cabin crew are supposed to be experts in.
Safety management has nothing to do with the nearest exit and oxygen masks. It is all to do with safe methods of work by crew, engineers, ATC and the rest.
Ask any airline safety manager and he will agree. The briefing is a CAA (and other regimes) requirement which has nothing to do with safety. I am sure that the pax on MH370 were given a "safety briefing"