Always an interesting RV forum subject. As I always said “Lots of people can hook up a light bulb or speaker and make it work, but is it safe”?
In Canada the Electrical Safety Authority is the maker and keeper of the Electrical Code. Can they make a code that is 100% safe, well they try? Do they think that they can inspect every RV hooked up to generator before the consumer starts it up, of course not? This is why there is going to be two side on this debate till the end of time on a RV forum. On an Electrical Forum, there would be only one page of posts. It comes down to electrical theory and the best way to make it safe. When you’re wiring a house do you go on a forum to find about if you should ground it.
No one from a keyboard can tell you if your wiring is 100% safe, but then again I’m old and don’t know if some Electrical Inspections can be done on Skype?
A ship at sea is wired to code. When it is on shore power, does the power cord have a ground conductor? The electrical code will also determine that.