Boy, they really piled on "the hillbilly"

This was definitely taking place in the present, but I could only discern that from the vehicle models and the local hobby of cooking meth. Otherwise it seemed like we were entered into a time-warp in the middle of a Hatfield and McCoy feud. Everybody was suspicious of everybody else, even though they were "all related." You've got a 17-yr-old teaching a 10-yr-old to shoot a shotgun, squirrel-huntin' and squirrel stew, the neighbors skinning a goat-sized animal in their front yard, not one cell phone, not even one tv or even radio to be seen or heard, implied incest. They hate the authorities and like to be a law unto themselves--so it is to be inferred from the hazy motives behind the father's death (frustrating, that--probably working on the obscurity = heightened significance theory). Oh and, can anyone explain why they had to cut off both his hands, otherwise, as the protagonist's erstwhile enemy says, with only one hand "the police will just think he escaped the law." I could not imagine a scenario where that would have played out. I think it was a matter of the director thinking "if one hand-sawing is good and gruesome, two is even better."