It is.
New England was settled in the 17th c. by religious dissenters, mostly from London and the southern counties around. The social and political structure was formed then. The North has a custom of common ground, the South never had.
The history of the American South is closely tied to the Acts of Enclosure in England (viz. the Highland Clearances). The vast majority of enclosures were 18th c., for the most part further north … those displaced came to the southern colonies as indentures, tenants of wealthy landowners. Southern settlement, and Westward movement, brought custom and law from 18th c. England.
Old wounds never heal. In a Shakespearean sense, we're still fighting the Wars of the Roses … York vs. Lancaster. Some days I think it's cosmic … other days I think it's hopeless.