you buy skyrim to technically... not play it. The Main quest is the total point of Skyrim. Honestly, you would have to be an idiot to not play the main quest. The main quest is fine, the dragons are fine. Who cares if they kill a couple of npcs. The whole point of the game is dragons. Main quest is the main point. You have hearthfire and dawnguard to show. Totally clueless.
The point of Skyrim is to be who you want to be, play as you want to play. There are those of us that do not wish to play as the Dragonborn, most of my characters have been like this, and to be railroaded into being required to be Dragonborn in order to even play this dlc goes against everything TES is about.
I'll believe this requirement to be Dragonborn when I see it. I'll not be buying into rumors and hearsay.