Because AI cannot do anything it hasn't been programmed to do. When we enter the quit command into a regular program if it doesn't quit then that is called a bug, but when AI is doing it then it is trying to survive? No, people have designed a program that works on data that is so complex they don't even understand it, and they made the poor design choice to put the part they don't understand in front of the internal quit. It's still a bug, but people want to make it something more mystical than that. The complexity of it is basically being used to create plausible deniability that it is still a computer program.