Forget what? Patriotism in not a virtue in of itself. And being patriotic to the Confederacy is the opposite of being patriotic to the USA. Scots aren't being patriotic to the UK. Are you seriously OK with the idea that the South should break off from the Union? To what end? Are they going to expand their slavery-based economy beyond the walls of their vile for-profit prison system?
The commonality that joined the South was their desire to preserve their feudal, slavery-based economy and their complete rejection of America's founding principle that all men are born equal. Their churches committed blasphemy by using Christianity to make it God's will; their aristocracy committed treason because they couldn't tell new states that they had to allow them to expand the market for slaves into new territories; and when shown mercy after getting their asses kicked, the neo-Confederates among them repaid that mercy with 160 years (and counting) of being white nationalist assholes.
I have nothing against people who live in the former CSA and think that many people waving the Confederate flag have been deluded about its meaning and therefore don't mean offense - that's what you get when states like Texas gets to dictate how "history" is taught. Lots of the people know exactly what it means though.