In this strange complex of time and space anything can happen

"There’s plenty to be said, of course, about male domination of women, the symbolism of the penetration of the vampire’s fangs into the flesh"

Don't forget the gay aspect too, thinking of Dracula saying he wants Harker for himself.

"I’m not the first to notice this, and I won’t be the last, but Stoker’s vocabulary seems significantly limited at times."

I'd be tempted to go the whole hog and say that Stoker is a pretty bad prose writer. Dracula works because of all the potent themes that percolate through it, perhaps not entirely consciously. By contrast, Frankenstein as an elaborately structured novel of ideas.

"The difference in fact is probably due partly to a shift in general attitudes between the time when Frankenstein was written (1818) and the publication of Dracula in 1897, and partly to the different social milieux of the authors"

Hmm. There were a great opponenents of technological progress in Victorian literature though; arguably Dickens, but also Ruskin, Morris, Butler.