The main cast are so evil towards the dumb yokel country folk... presumably for the social crime of not being urban elites, and so pretentious even when they are talking to themselves that you actually want to see them die.
You aren't scared, you are rooting for the bad guys because the good guys that you are supposed to relate to, supposed to like, supposed to want to survive are so geographically hateful, so pretentious, so self absorbed, that the only pleasure you get is seeing them killed off...
... and that doesn't make for a good horror movie. I mean, yeah, it's really rewarding to see people like the guy you knew in college highly political man with a 75IQ, a list of long words that made him feel intelligent, and an attitude that he was an expert on everything killed off, but all that means is that you have to spend time with people like him again...
... and unfortunately there are more than one of him this time. They are an entire group of people.
The inbreeds look both friendly and tolerant of outsiders as well as intellectually superior to the herons.
It's a painful watch.