Shame on you, you appear to deliberately juxtapose two completely separate things, a person's ability to understand industrial relations and their understanding and ability to fulfil their function as a responsible member of staff in a crisis situation by stating
How on earth can they be relied on in an on board situation requiring clear thought.
By all means criticise those who are choosing their own particular stance in this dispute but DO NOT go on to use the indecision you perceive in this scenario to question their abilities. It undermines everything you subsequently put forward.