Have you ever heard of the five hazardous pilot personalities? Maybe you know of a macho type or have a friend who exhibits anti-authority behavior?
FAR 91.13 is a catch all for doing “risky things with an airplane”. There doesn’t have to be a specific regulation for the “risky thing”. Having so would make the FAR/AIM 10 times thicker and impossible to carry or find anything.
Interpreting whether a piloting act is risky or not is up to the discretion of the FAA and punishment could be harsh depending on the severity of the risk to persons or property.
Lesson learned is to identify hazardous traits early in training or during flying and work hard to erase them from the cockpit. Peace ☮️