Interesting thought- maybe Harry’s dark side counts as a remnant of Harry, too.
But how could Harry’s dark side endure with Harry gone?
I am tempted to suggest Harry’s legacy (the Patronus 2.0, application of rationality to magic etc.) as a remnant of Harry that Voldemort couldn’t destroy. Although Voldemort has his own legacy (the Death Eaters, the impact of the war), and it would be strange to talk of anyone “destroying” that.
Perhaps the prophecy is saying that the only way for Voldemort to destroy Harry is to use Harry’s style or powers against him? Voldemort with a Patronus 2.0 would likely count as a “remnant”.
But how could Harry’s dark side endure with Harry gone?
I am tempted to suggest Harry’s legacy (the Patronus 2.0, application of rationality to magic etc.) as a remnant of Harry that Voldemort couldn’t destroy. Although Voldemort has his own legacy (the Death Eaters, the impact of the war), and it would be strange to talk of anyone “destroying” that.
Perhaps the prophecy is saying that the only way for Voldemort to destroy Harry is to use Harry’s style or powers against him? Voldemort with a Patronus 2.0 would likely count as a “remnant”.