No thanks. I can't miss this opportunity to deny you sleep.
If you don't like it, you don't have to believe it. That's the good thing in TES, there are many possible explanations for stuff.
Many people are thinking for example that the dynasties were Dragonborn, but in a different way than the PC or Tiber Septim.
Nah, I'm quite happy to be mistaken (and I'll gladly admit it, except when Skoomacat's sleep is on the line) and I won't bury my head in the ground to ignore lore.

Suffice to say, I'll be a little disappointed if this DLC doesn't delve more into the lore regarding Dragonborn, Dragon cults etc. My expectations are low on that front though.