I recall seeing an interview with Bruce. This happened during the making of The Cowboys. On set Wayne came up to Bruce and said something along the lines of, I feel sorry for you, you gonna kill John Wayne and they’ll hate you for it. Bruce replied, on the contrary they’ll remember me and that will be good.Unfortunately , it also killed Bruce Dern's acting career.. He was "Unforgiven", for killing the Duke in this film.
Bruce was right, his career took off after and got lots of great roles. He was nominated for Oscar’s at least two times and had quite a few very good and financially successful And he’s still making movies! Big Bruce fan since I was kid and seeing the Cowboys, JW as well. Both great actors and Icons.