The point here is that Republicans are people like you and I. “Crazy Republicans” those are few and far between. I would otherwise believe it when I see them over a hill guns blazing.
One very important aspect of this situation is that they got Trump in office last time because they rigged the electoral college on their favor. However if you compared their population size to the Democratic population size, there are a good ten fold more Democrats than Republicans. So if you wanted a civil war in the style of Hulk vs Superman, the republicans would be represented by a crying baby 🍼.