Not really, but you are right -partially. In areas like the mid west and most of the south there will be almost zero sectarian violence. The "normals" will rule via state houses and suppress the tiny crazies who will emigrate anyway.
The coastal areas will not be so lucky. In those areas it will be a hybrid of the original where the "war inside a war" i.e. Kansas will be larger on the "mixed" areas of the coasts.
The USA is huge and you cannot project onto the entire political landscape what will happen in NY on to the rest of the USA in a scenario of a general collapse of FedGov.
“Not really, but you are right -partially. In areas like the mid west and most of the south there will be almost zero sectarian violence. The “normals” will rule via state houses and suppress the tiny crazies who will emigrate anyway.”
The south is more divided than it appears. There is a large African American population allied with the progressives of the urban northeast and urban leftist west coast. In addition the white professionals in the large cities (Atlanta, Charlotte, Raleigh, Richmond, Austin, Houston, northern Virginia) are allied with the progressives of the northeast. These progressives, allied with the African American community have already turned Virginia into a red state and are in the process of turning North Carolina and Florida. The urban minorities are well armed and many are organized in gangs. If there is sectarian violence in the future it will intense in the south.