Seem to real upset about him using his bare hands. Why?
I also use my bare hands, I don't wear gloves. I have found over the years that there is nothing on the OUTSIDE of the hose, and as I don't stick my hands inside the hose, There is no problems.
I have also found over the years. There is no need to rinse out the sewer hose with a garden hose. IF after I run 30 gal of fresh water thru it from the grey tank, It is not clean enough. squirting a little water from a garden hose will not get it any cleaner.
So I pack everything away, Wash my hands, and go.