For the same reason that an amateur with a powertool ends up in the emergency room and a seasoned pro knows which way to point the business end. AI is in many ways a powertool, if you don't know what you are doing it will help you to do that much more efficiently. If you do know what you are doing it will do the same.

Power tools don't magically make you a carpenter - they just amplify whatever level of skill you already bring