It is that momentous, and it remains beside the point.In one sentence you proclaim that "civil war is proof an armed population can sometimes take on the national army." In next, you declare it's "beside the point." It's either so momentous as to illustrate the application of Madison's ideas in Federalist #46, or it's not.
That is not quite true, and it doesn't matter. That's not how tyranny commonly imposes itself anyway. The value of an armed citizenry in discouraging or resisting tyranny has little to do with its ability to take on a domestic standing army in combat.Times have changed, and that is no longer so. Hell, today's U.S. military doesn't even have to put "boots on the ground" to wage the opening salvos of any rebellious uprising.
And the deflection of the discussion into that minor or side issue is part of the jamb - both "sides" based in fantasy and irrationality, the reasonable split, political gains prevented.