That's because he didn't go. He was in no condition to travel after Randal McCoy shot him in the shoulder after the burning of the McCoy Cabin in 1889. The jostling from the wagon and trains over that distance would have been too painful. If you draw a line under "OREGON" the 'R' turns into a 'B.' Unscramble the letters and you'll see where he was, with the 'G' left over. Johnse Hatfield was my maternal great grandfather.
He may have gone when he was younger to work, but most probably he got information about the area from someone he worked with and trusted to give him accurate information, .
By the way, where did you get your information?