Originally Posted by SloopJonB
I think he is taking the old advice too literally - I think it has always simply meant "don't leave a boat that isn't actually sinking". This was observed more than once in the Fastnet disaster where abandoned boats were found floating days later. A liferaft is a last resort, not an "option" so to speak. Many people have died merely trying to transfer to a liferaft.
Obviously if a CG chopper is overhead and swimmers like the quoted one are in the water, you get off as they instruct, floating or sinking.
Only a fool would act contrary to their instructions - they know a hell of lot more about critical situations than any (or at least most) of us.
I think he is saying sometimes the boat is stronger than the crew and you should get off. Just because a boat is found floating does not mean the crew could have survived on the boat. A bad knock down could kill you and the boat would be fine.