It's not a culture war. It is the war against barbarity, against fear, against xenophobia, against aggression, against ignorance. The same war as it always was. Choose.
That is exactly what is a culture war, as you assert a set of beliefs and perspectives ought to be warred against. The term culture war does not necessarily suggest equivalence, though of course both sides in your country use grandiose and reduced language. Here’s a quick summary of the term. https://en.m.wikipedia.org/wiki/Culture_war
> Actually a deal is currently being negotiated to determine exactly how much they can tell us what to do, in return for avoiding the total destruction of our economy
"Total destruction"? The brexiteers aren't the only ones invoking fear.