Cornwall has to be one of the most unwelcoming societies on the planet
Have you ever tried North Wales? ... As soon as an English speaking tourist may walk in they'll change their converse to the Welsh language!
Where I live I'm often referred to as a "pom", an Australian friend only popped in to my resort yesterday and the "Pom/Aussie" banter started, nothing to be offended about much the same as nothing offensive about "Emmett" and "Grockle.
About the only thing wrong with Cornwall is the weather during the winters.