It can also refer to when the Alessian order tried to remove the Mer aspect of Akatosh and basically drove him insane which also broke the dragon. It’s probably why Alduin is his own entity and not just Akatosh at the end of time, with there being three main aspects of the Dragon god that being Auriel, Akatosh, and Alduin the beginning, middle, and end.
Personally I don’t think Pelinal Whitestrake and Marukh went far enough, remove all mer.
It can also refer to when the Alessian order tried to remove the Mer aspect of Akatosh and basically drove him insane which also broke the dragon. It’s probably why Alduin is his own entity and not just Akatosh at the end of time, with there being three main aspects of the Dragon god that being Auriel, Akatosh, and Alduin the beginning, middle, and end.
Personally I don’t think Pelinal Whitestrake and Marukh went far enough, remove all mer.