That's because you guys KEEP trying to make the history of the game relevant. It's a game, specially on the NES days, the story was relegated to a manual. It wasn't supposed to be deep or anything like that, it was a game to be played, only. It was a cliche, the big, bad guy on the last room, always thinking that no one would touch him.
I think they never thought that Castlevania would grow that big.
Plot was always secondary in Castlevania. That's why the story isn't really that good on the old canon. And with LoS, it's even worse, they used another cliche, making the first hero the villain.
The only aspect I'm interested in Dracula is how much difficult it is to defeat him. Only the first games, COTM, Rondo (PSP) he poses somewhat of a danger... but mostly, he's really a cakewalk. I wish to fight a very hard Dracula someday...