I also saw this show and I found it to be rather biased. I feel that some of the dissatisfied passengers expected an awful lot more from the cruise lines than is reasonable. In the case of the man who died from internal bleeding, he had a condition that could have caused his death anywhere, not just on the ship. Some of those folks seemed to think that the ships should be equipped to cover just about any emergency imaginable. That does not seem to be practical.
Imagine the cruise lines registering in the US and paying all of our taxes, complying with so many of our restrictive policies, and hiring more US workers. Can you guess what the price of your cruise would be? I would venture a guess that most of us could not afford to cruise except maybe every ten years or so.
Bottom line IMO is prudence on the part of the passenger.