What's indicated here is a lack of understanding, and training regarding propellers.
First of all Guppy this is not a forum for AG pilots but PRIVATE FLYING. I have seen a pilot flying inverted over an airfield at 100 feet but that doesnt meant its a practice that should be recomended to low hour amateurs.
If you treat the prop as live you are more cautious than if you see it as an implement to move the aircraft around the hangar. Of course you can swing a prop or move it but that is not what treating the prop as live means.
As for getting in and out of an aircraft with the engine running, why is it neccesary and when is neccesarry. Its a habit taught by lazy sloppy instructors who are possibly potential AG pilots.