I find it a bit odd that not a single time anyone in Tural mentioned the Final Days. Considering we're talking about two entire continents here, I find it hightly unlikely that not a single area was visited by the Song of Oblivion.
The citizens of Mamool would have been prime candidates to become blasphemies, since they at the time were wallowing in despair. Then again, maybe the aether of the fallen meteors shielded the area, but the same can't be true of the entirety of the two continents.