Why is everyone from Appalachia now?

I just saw an instagram post that said something along the lines of“if your from Appalachia comment what state you’re from”, and there were a lot of comments of people saying “New Jersey”, “Massachusetts”,“New Hampshire”, etc. I’m not trying to gate keep but isn’t that literally not Appalachia? It just kinda bugs me as I feel like I’ve seen more representations of Appalachia become “trendy” recently.