Neither are guilty of anything more than surviving.

What the fuck are you doing trying to create scenarios where you can blame the workers? This is exactly what the ownership class wants, for people to create bullshit purity tests that further divide the proletariat. There is no ethical job under capitalism, nothing that can be done without a drop of malice, because our system has been designed to maximize cruelty.

The requirement isn’t that vampires need to hear you say “You can come in,” it’s that you need to extend them a formal invitation and lower the barrier that protects your home. Theoretically, you could lie to the vampire, but they’d probably notice your barrier and wouldn’t get fooled.

…you do have a barrier right? You properly consecrated the ground before moving, drew the sigils, and cleansed all existing evil spirits? 'Cuz otherwise, any old spooky creature will probably skip the pleasantries and just get you.