I don't know, I don't see it. I think the guy that wrote this article is dealing in an alternate reality. The worst thing the United States of America could do is split up the union. That might work for some things, but that weakens the national defense. And that is really the only reason to have a country. If we had a one world order, there would be no reason for individual countries with individual governments.
Splitting the US up is exactly the wet dream that our adversaries have. Russia, China, Iran, and all of the muslim terrorists would like nothing better than to physically split the country. That's why all of their social media infiltration is aimed at doing exactly that.
What we should be doing is working to come together. There used to be a time where disagreement led to compromise. It worked pretty well for a good period of time. But now nobody is willing to give an inch. We need to get rid of the radical extremes and work toward a compromise that won't be entirely what either side wants, but where both sides get some of what they want. Mostly what Ronald Reagan did.
America has never been invaded by an attempting conquering army. Mainly because of our favorable geography and our heavy military buildup. But our adversaries have figured out they can weaken us from the inside. We can't let that happen. The only way they can beat us militarily is through nuclear war which will basically be a draw and the end of most civilized life on this planet. I don't believe any of the major nations is willing to pull that trigger. Some of the rogue nations may do it, but I believe we would pummel someone like North Korea into dust conventionally should they be willing to launch a nuke. Bottom line is that we are stronger together, even with our differences, than we are apart.