Apparently the movie is a commentary on movies,

The foodie is the worst person because they're representative of a film fan who obsesses so much about the technical aspects of film and consequently misses the fucking point of the movie... it's a whole made for a purpose.

Essentially the film is saying "why do you know these things if you aren't using that knowledge?"

>So, why focus on these people, who by and large are just regular people trying to enjoy their dinner?

This character is in the film and she >!survives!<.