Are there “coastal elites” who look down on “flyover country?” Sure. No group is perfectly free of prejudice. It works the other way too; I have family that sneer at educated idiots, latte drinking city liberals and so on.
Try to keep in mind, who or what is emphasizing and amplifying these fault lines, and why? Why is it important to keep insisting on binary labels and othering? From keeping people angry and, thus, engaged?