My point was that maintaining an RV at your residence does not automatically decrease the value of the home.
Property values based on keeping an RV on your property is subjective.
The value of owning a corner lot or an in ground swimming pool is also subjective.
There are folks who will love the pool and others who will consider the upkeep and water bills a negative. Corner lot is a nice view or it means more traffic and trash.
A nice RV on site can imply the owners have means, travel, have diverse lifestyles; see it all is directed by the individual's viewpoint.