IDK
For one…the Air Conditioner has a timer to prevent short cycling the compressor…it also staggers startup of multiple units.
So, that said… there are RVs that do not have an ATS. We do…so, I guess some feel there isn’t a demand until the connection is made and the ATS relay closes… and others may have a surge protector or watchdog, to delay further the load being applied until the wiring and acceptable power is detected. And then…if you wanted to go thru the hassle…tripping the main inside your distribution panel could remove all loads.
I guess it can be overthinked. Just my opinion…if you use the breaker, you are safe regardless of the rv. In rigs like ours with transfer switches, etc…the arcing probability is most likely going to be when unplugging. Most of us don’t run around and turn off the charger, or make sure the inverter isn’t in pass thru mode powering the residential fridge, etc…. I certainly don’t trip the main breaker. Using the pedastle Is one stop shop…and wear and tear is directed to an easily accessed and low cost item.
I would think everyone has seen the spark when you are vacuuming the carpet and reach the end of the cord. The plug comes out while the vacuum is drawing a substantial load. Normally, we plug and unplug appliances with the power switch OFF…so it is a non event.
I haven’t seen it first hand…but our ground crews hated when pilots gave them the signal to remove ground power, and haven’t switched over to APU first. I have heard the arc can shoot out 4-6 “… I’m sure that would get my attention. With galleys, lights, avionics, lighting, entertainment, etc…there is a significant load on the ground power, if it is carelessly left selected.