As one Reddit user said (and I really appreciate the joke) Dracula just "exited stage left".

Yeah, there are a lot of things that point to the show being cancelled early and actually not the intention at all. Like, Ethan was totally on the poontrain with Hecate, but then like two episodes later he's in love with Vanessa again? I know he always loved her, but it was an abrupt shift.

Also sad we'll never get our Mummy in Egypt adventures with Lyle.