"Then why do they care?"
It's the same mentality the ranchers in Wyoming have. I have seen owners or ranch hands piss away hours following two dudes in rafts down the river, phone in one hand camera in the other just waiting for us to get out to take a pee or stretch. You would think they would have something better to do, they don't. They look at us like an invading force coming to steal their cow pies.
The militarized section of the Osage fork has been on my long list on destinations. Mr, Empire Ranch may think he owns the river but he owns it no more than he owns the air above is little kingdom.