I'm not aware that anybody here has maintained that the Civil War "perfected" or "was perfecting" America. The war happened. It can't be undone. It brought many bad things, but also some good things. In some ways we're a better country, in other ways not. The opposing view seems to be that we had a perfect system before 1860 and Lincoln destroyed it. Maybe that's a strawman (or Funkhouser, as I guess we're calling them now), but so is your view that those who disagree with you are saying that war was perfecting America.
Your arguments would be loved by Putin. I’m sure he hates the loss of Russian satelite countries, and he would argue that its too “unstable” read: Out of our control.
No one here argues that the Civil War perfected America, tis the libs that do that. But not acknowledging the bad precedent set by post-Civil War laws (their perfection statutes), is allowing the federal supremacy to continue.