Now, with the hosts upgraded from docile targets to bloodthirsty revolutionaries, he's finally got himself the battle with "real" stakes that he's been yearning for. There are new players to compete against. He can embrace Ford's final narrative: chaos.
Some of the finale's most prescient dialogue actually came from the show's most loathsome character: Logan. Before he rode off, naked and holding a feather, into the great beyond, the show's resident snarling dude-bro spoke at length about the young MIB's obsession with Dolores, telling him, "You never really gave a shit about the girl. She was just the excuse. This is the story you wanted."
It's hard to disagree. The look in the MIB's eyes as the wave of robots emerged from the shadow in the woods was not one of terror. He looked excited and amused -- even after getting a chunk of flesh blown off. This was the twisted, violent future he'd been waiting for all along. He finally found the "deeper game" -- and now he'll be gunning for the high score.