Because we are going back and forth on Yes or No... I vote for no.
I watched a high end 5th wheel go down the highway one day. He had a strong bumper with a small receiver hitch attached to it from the factory. He had a decent looking bike carrier and he also had the biked reinforced to the ladder of the 5th wheel with straps.
Every time he hit a large bump the entire assembly would bounce up a down. ( A big amount of bounce too) . I actually backed off from him until I could pass safely because sooner or later this thing was going to break off and I didn't want to be near by while bikes were flying down the highway all over the place.