This loss, compared to losing his memory because the author decided to dumb down the MC for the plot, is far more acceptable and even realistic I would say. It's not normal for a 12-year-old to win against the specter/memory/Horcrux of Voldemort
is Ronan going to get his memory of that night back I would really like to see Ron sweat a little if he knew Ronan remembered also what will you do about Lockhart?