How often do you hear of someone loosing thousands of dollars perminantly because of a banking error? Almost never, because if a bank did not reimburse people who lost money, their reputation would be destroyed. How often do you hear of people losing thousands of dollars because of a cryptocurrency? All the time, because no one is responsible for the lost money, so no one will replace it or work extra hard to ensure it is safe. Security doesn't matter when you have a central authority dedicated to ensuring you don't loose your money, and which had been successfully doing so for decades.

What does this first sentence even mean?