"They look like monsters to you?"

[question?]

What do you think it means when Vincent says to Heather, "They look like monsters to you?"
If it's a joke as Vincent says, it's an odd one.

Here is a trancript of the exchange from Gamefaqs:

Vincent: Don’t stand there looking so smug.

Vincent: You’re the worst person in this room.

Vincent: You come here and enjoy spilling their
blood and listening to them cry out.

Vincent: You feel excited when you step on them,
snuffing out their lives.

Heather: Are you talking about the monsters?

Vincent: Monsters...?

Vincent: They look like monsters to you?

*Heather gasps.*

Vincent: Don’t worry, it’s just a joke.

That quote always seemed odd to me, but I have always taken it literally. See, I am one of those people that believes that the protaginist could quite possibly be killing other "people". In the world of Silent Hill these "people" are changed into something that could make a connection within the protaginists mind, and that to me is what the monsters could possibly represent. However I still have some doubts, perhaps this info will be revealed in a future game?

If I remember correctly (it's been a while since I've played it) the way Vincent says that it was a joke, his tone and cadence, implies that he wasn't joking.
I'm not sure what to think if he wasn't joking though. Does that mean that Heather is walking around killing people in the real world? Does Silent Hill make Vincent see the monsters as benign, reflecting his mindset? Are there "blank" monsters roaming Silent Hill, allowing each person to see them differently, kind of like a monster Rorschach test? Confused

Is any of this like what you're saying shootzombies?