Like Umbran said, I think it's about trying to avoid literary self-referentialism... if that's even a term.
The thing is, though, that this just annoys me and takes me OUT of my suspension of disbelief. Everybody knows about zombies. They might not distinguish between a Romero stumbler and a modern runner, but the general concept of "people eating you after dying" is most definitely a well-known fictional phenomena. To assume that people in such a situation don't know the word or the term or how to apply it, ESPECIALLY in a place like America, is so absurdly idiotic that the ONLY explanation that I can accept is that the movie is in an alternate universe where the concept has never gained popular attention.
Then again, if done well I don't mind it so much. The Walking Dead is a good example. People are sheep and follow the leader so whoever first termed them 'walkers' in Rick's group, everyone else just latched on to that and made it the default terminology within their clique. Now, if the term zombie NEVER comes up, especially as they engage new groups of people, then I'll be bothered by it.
The thing is, though, that this just annoys me and takes me OUT of my suspension of disbelief. Everybody knows about zombies. They might not distinguish between a Romero stumbler and a modern runner, but the general concept of "people eating you after dying" is most definitely a well-known fictional phenomena. To assume that people in such a situation don't know the word or the term or how to apply it, ESPECIALLY in a place like America, is so absurdly idiotic that the ONLY explanation that I can accept is that the movie is in an alternate universe where the concept has never gained popular attention.
Then again, if done well I don't mind it so much. The Walking Dead is a good example. People are sheep and follow the leader so whoever first termed them 'walkers' in Rick's group, everyone else just latched on to that and made it the default terminology within their clique. Now, if the term zombie NEVER comes up, especially as they engage new groups of people, then I'll be bothered by it.