I quit reading after the first 5 pages, so may have missed some important posts.
Quantum leap here, Geezer type experience, loaded onto DC 3's Connies, and Super Connies, using the old standard stairs. 3 different airlines. All the engines, both sides of the plane, were shut down before the crew opened the door, or the stairs were rolled out.
Later, loaded on and off Army C 47, no engines running. C 54, 6 times, never with an engine running.
More modern, bush mail twin Piper Navajo, the pilot shut down both engines before even allowing seat belts unfastened. The ground guy did not come within 20 feet of the wing tip until the props stopped turning.
I will admit that I have hot loaded a few times, but with a competent pilot at the controls, and all the persons loading had many flights previous, and had been briefed. WW 2 Army Airforce mechanics from the 345th Fighter Squadron, were very aware of the dangers of running engines. No one went forward of the wing strut of the Cessna Skyhawk. The plane was having trouble with hot starts. My son chocked the main gear on the loading side, full opened the door, and directed the loading and unloading passengers.
All that said, I believe Salty may have used in appropriate words and tone, resulting in an antagonistic response. His response to the suggestion of "How to win friends and influence people" implies that. I have read much of that book, loaned to me by a friend who felt that I could benefit from it, and I agreed after only a few pages. Outstanding guidance.