Vive la difference
"attack vector that AI would likely miss without the creative flexibility of human decision-making."
That sums up exactly what the difference is between artificial and real intelligence. AI is essentially token matching (mentation at the level of the bumble bee) whereas the human can be creative. We don't understand the mechanism of creativity - we can only infer from examples, and the range of inferences is almost as wide as the range of examples. Consequently we can't tell a mindless machine how to do it. I suspect that a key component of it is understanding.