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.
Federal supremacy? See the Constitution and its "supremacy clause." It doesn't mean that the federal government has all the power or can do whatever it likes, but within its sphere its laws can't be repealed or ignored by state governments. If you disagree, you're arguing against the founders.
I acknowledge the bad precedent set by post-Civil War laws. And I acknowledge the bad precedent set by pre-Civil War laws. Nothing is perfect or without problems or beyond corruption or the possibility of corruption.