If a pilot is unfit, due illness or stress, then they have a legal obligation to not be at work. The company can't fire you for that. They will not try the 49er thing again, as it caused them far too much unintended consequence. At the moment, CX is panicking as the ever increasing resignation rate, and a real worry that the supply of suitable pilots is being rapidly closed off to them. I would not want to be a passenger booking on CX over the next 90 days.