The Future is uncertain. Not even the Elder scrolls can speak with certainty about what the future holds, they can only speak of possibilities and what may be.
I feel like that is said in the game somewhere, but I'm really hesitant to believe that. The Elder Scrolls are unfathomably deep, and I think if they can keep up with several dragon breaks in the recognized past, they can keep up with this literal dragon break (and I do think that the events of Skyrim have caused another) at the current point in our timeline. Because honestly, what makes the World-Eater event any different from the Oblivion Crisis or the Nerevarine Prophecy? The Dovahkiin was specifically included on Alduin's Wall. Hence the prophecy seemed to recognize that the end of the world would be stymied.