When the abuses of that era have been cured and Northerners quit exhibiting the sort of bias this thread is about, perhaps so.
But more than attitude adjustment, we need some structural reforms to cure the Lincoln-era excesses, and Lincoln's own legislation and executive orders examined for constitutionality and, if doubtful, repealed or rescinded, or declared null and void either by the Congress or by the courts.
First, the railroad land grants have to be rescinded and the status of corporations (distorted by SCOTUS during the Gilded Age) changed back to what it was before the Civil War; a great deal of mischief has been done on both accounts, and it's time to roll those issues up.
Likewise, the 1965 Voting Rights Act needs to be rewritten or repealed, to remove the encumbrance to the States.
Furthermore, Texas vs. White needs to be taken down and the sovereignty of the States, even during secession, recognized. The public debts of the States during the Civil War, and of the Confederacy, need to be recognized and assumed by the States involved, and their enactments recognized as legitimate. West Virginia needs to be folded back into Virginia, which was subdivided without its consent by the Lincoln Administration unconstitutionally, and the matter of Nevada statehood reconsidered anew by all the States, Nevada's original admission having been a fraud.
And finally, the former Confederate States need to be allowed to decided for themselves whether they want to remain in the Union, since their secession conventions were (and need to be recognized as such) completely legal and legitimate expressions of the People's sovereign will, and the 14th Amendment needs to be passed de novo, several ratifications having been obtained illegally or even fraudulently, and some repealers having been declared (by judicial fraud) illegitimate when in fact they were fully legitimate and legally binding.
In short, it all needs to be fixed, before people can talk about "moving on," because the damage and its effects remain with us today.