Meanwhile Arifa Akbar at the Indy really likes it and Sam Wollaston at the Guardian quite likes it.
The response seems to be dividing along traditional right/left lines, which is odd because, as I've said in a comment, I don't see it as a particularly political piece of work. It depicts a society in turmoil, but without blackening the aristocratic old guard or white-washing the workers.
Does the right feel threatened by any depiction of its rural power base as less than idyllic? I suppose it must.