it will always be the man with 2 wings who will make the decision
So if a Captain with a can-do attitude wished to carry dangerous goods on board the aircraft in which you were operating you would let him make that decision and accept it.
....and you would allow a decision that you know to be wrong / unfair / bullying / illegal to proceed without challenge. You would fly with a pilot you believe to be intoxicated because he is a pilot.
Actually we live in a world were every boss has a boss to whom he/she must answer to. .....and a coroner.