Of course, you would have to ignore major story elements to make this a reality. The Traveler seeing something within this solar systems sun, and then choosing to fight to protect humanity from the Darkness as opposed to fleeing. Humanity then, can (not coincidentally I'm guessing) wield the Traveler's light themselves. The Traveler likely foresaw this ability, and humanity as they key to overcoming the darkness, which is what the game is ultimately all about.