I'm struggling to think of a reason why this is anything but bad faith nonsense.
the only thing that saved us was cooler heads that prevailed on both sides.
In the field International Relations, there's lots of discussion around the stability (or instability) of a bipolar distribution of power. Your stance is closer to neorealists, mine is maybe closer to classical realists. Have fun reading https://en.wikipedia.org/wiki/Polarity_(international_relati... and related links
But from a game theory perspective, having only two powers turns everything into a zero-sum game. I argue that leads to less cooperation and increased divisiveness. Not agreeing with Republicans means you must be a Democrat in their eyes. This "us versus them" mentality is somewhat tribal and leaves little room for nuance.
If I had a magic want, the US would have a 4 party system. Like a cartesian plane with civil liberalism <-> conservatism on one axis and economic liberalism <-> conservatism on the other axis
I suppose they must account for this somehow but isn't that exactly what a series of proxy wars in far-flung places between the United States and the Soviet Union were?
I wouldn't call that a "routine" matter.