That's not entirely fair. There's a wide range of motorcycle gear available. Buying the best stuff, the equivalent of high-strength line, does dramatically reduce your risk of injury or death relative to cheap or no gear. Asking if the line was the appropriate type is a valid question.

A huge part of riding a motorcycle is preparing for the unexpected. Always having an escape path, knowing your limits and the limits of your gear and riding within them. I'm sure there are similar concepts for divers, it's entirely fair to ask if this diver took all the necessary precautions or if there are additional precautions that are possible.