Well, if we are nitpicking, might as well toss in Carmilla and Laura's ultra-novel-contradicting appearances in both the classic and LoS timelines. Oh me-oh-my, how DARE they!!!
CV's version of history has NEVER bothered me. It's a fictional world, so I'm open to any tweaking, even if they say THAT world's version of Vlad Tepes was actually a vampire who lived during the Crusades, as well as the events of WWI being ignited by Elizabeth Bartley. If people can swallow this type of thing with other stories(I mean, let's face it, almost every fantasy story/movie that takes place in OUR world does it, be it from Watchmen, Marvel Comics/DC Comics universes, and hell, even Stoker's novel itself), sure as hell CV has the right to do so too. Are people going to complain about Alan Moore's choice to include Mina in his League comics? I think people let too many little things annoy them, especially in fictional fantasy worlds. What gets me the most is, people want more realistic takes on fantasy, which always makes me laugh. A good example is how people are saying the inclusion of Ant-Man and Wasp would be bad for the Avengers movie because they are too unrealistic. I mean, in a world where a man can transform from normal size to a giant(Hulk), a god-like man could wield god-like powers(Thor) and humans are capable of technology that makes OUR own reality look like crap(Iron Man), saying Ant-man and Wasp are unrealistic in a world where all those obvious fantasy aspects exist is just being finicky.