Actually, if you took the time to read the article, the author notes the family of "vampires" are actually "wannabes".
Sounds like Fallout humor to me. I could see you stumbling across a crazy family who believed they were vampires in the original and having some pretty entertaining...
I may just be a lurker, but all these technicalities everyone is complaining about is a bit ridiculous. So there are still buildings and "protection pods".
If you wanted true realism in the post-apocalypse world, you wouldn't have too much to work with. There is plenty in F1 and F2 that...