People keep talking about "Federalizing the National Guard" and now you've got other States pledging their NG to Texas in defiance of the Supreme Court (see image).
Seen from the outside and ignoring all the innocent people suffering, I would love one thing about the USA splitting up, it would be the perfect example of how shitty things can get when people don't realize they live in conservative locations that depend on the goodwill of more progressive locations. Split the USA like on OP's map and just watch as the red part devolves into a third world country.
It would be rad for me too. I don't wish harm to Americans of course, but I think it's about time they start throwing hands instead of whining on the internet 24/7 about how much they hate eachother.