Board Thread:General Discussion/@comment-10197675-20130806142227/@comment-1470368-20190420222209

Lore isn't supposed to be 'cut-and-dry', or even close to 100% accurate, as the vast majority of it is written accounts of biased authors. The evidence presented in-game (the ash piles & the purpose of Wraithguard, not the lore) is what led me to my conclusion.

To me, it just seems people are exaggerating the "mystery", as it was already "ruined" by TES3.

Unfortunately, Sermon 0 isn't actual series lore. It was submitted to the Imperial Library (fansite) by an ex-developer named Douglas Goodall.