Yes, and Elves can't become vampires, and the hero of BG I and II got rid of all the Bhaal-essence from the world, and Tieflings are made up of many races, what's established is merely prelude to whatever change they want to make.
What really irks me about this particular issue, I don't know if it's just an oversight on Larian's part, or if we're supposed to infer things about the world and Shar from this.
But you can take solace that, whatever the case, Larian seems game to retcon their work to make things more clear for us. So fingers crossed.
