Please help ! Does tv violence influence children's behavior more than adults behavior? If so, what is the influence on children at age 5 versus age 10? Versus age 15?

What is the tone of the following passage from a river runs through it by norman maclean? “this was the last fish we were ever to see paul catch. my father and i talked about this moment several times later, and whatever our other feelings, we always felt it fitting that, when we saw him catch his last fish, we never saw the fish but only the artistry of the fisherman.”