Well, for absolute evil, there's Bugs, Shedim, Shadow Spirits, and Horrors. The Infected are more of a middle ground. The ones that are feral are pitiable, dangerous, and should be put down, for everyone's sake. The ones that actually retain their minds, however, do not have to be absolute evil. In fact, most of them are just regular folk with a problem that makes them have to feed on people to survive. And the attitude of the vampires in the plot actually reinforce that. One group of people thinking they are higher on the food chain than everyone else isn't exactly new. Being willing to kill and terrorize to prove that belief isn't new, either. They are vampire supremacists, just like there are human supremacists. Alamos 20K doesn't represent all humans, does it?
The vampires in the plot aren't scary because they're vampires. They're scary because they are zealots willing to kill for their cause.