In Russia it was impolite, actually, to eat chicken not with your hands. Can't say why, maybe it's the possibility of bones splitting and flying away, and maybe it's that some of the meat remains on the bones, so some visible food gets thrown out. As a kid I would sometimes get looks (making my hands oiled and dirty I don't like, being autistic and just because it's inconvenient).

In any case I'm not sure someone's eating habits affect their politics, unless demonstrating lack of basic hygiene or involving cannibalism.