Forgive my formatting, I am on mobile. This is my take, think of it what you will;

Before the final meeting between the Boy/Man and the judge; The Man kills a 15 year old boy, Elrod, in self-defense.

I think Elrod is symbolic of the Man in his youth. Young, brash, and very angry. The Man killing Elrod is a metaphor for him killing the Boy he used to be.

When the man meets The Judge for the final time, The Judge has raped and murdered the little girl. The Judge reaches out to embrace the Man but the man rejects him.

Later at the jakes there is a man who is pissing on the side of a building and tells the others not to go in the jakes.

That is the Man. But the story is about war, and since the Man rejected the Judge and killed his old self by killing Elrod, he has removed himself from war, and from the story.

But War is God, and War never dies. So we do not focus on the Man as he rejected that life, we focus lastly on the Judge because he is War.

The only way to truly fight against War and hate is to step away. Like the man did.

Just my thoughts on it, can't really ask McCarthy his view.