Living Lore... that's how I reconcile a lot of what ESO is. Don't think of ESO as being events that are occurring right now, but as something that DID occur. What we are playing is sort of the retelling of those events. That's how come we can have inconsistencies and game mechanics, because it's not "currently" happening, it's just said to have happened this way.
But this is totally a weird perspective that I have taken on ESO. It's not really supported by anything other than my own perspective on the game.
I think a dragon-break seems a bit too easy, I guess. It's The Elder Scrolls catch-all deus ex machina... literally!