Please tell that to the Afghanis.
This isn't about some civil war, it's about what would happen if Red State America decided it wanted to behave like Blue City America has been for the last year. People talk about "Proud Boys" as if that's equivalent and I just have to roll my eyes.
There is an immense reservoir of anger within America in people who feel overlooked and the system is stacked against them. If they receive the downsides of civil strife even though they haven't participated in violence, they might decide they want the upsides of civil strife as well. This culture, unlike the sadly tolerated insurrections of Antifa, has the ability to have real power through violence if it ever came to it.