"Lightbringer" theory?

Granted, I am not active in many places where theories get bandied about.. but I have never heard any connection being made between the "Lightbringer" and the sword wielded by the House Dayne, "Dawn".. which is apparently hanging out in Dayne HQ waiting for the next Sword of the Morning to drop in and grab it.

Other than seeming too on the nose, this seems pretty much right on the nose to me... I dont know if there is much to be discussed on this, but would love to hear some other opinions on this idea.

Edit: just found a video with over 2 million views where it was mentioned... Lol. So i guess SOME people are talking about it. My bad!