In all likelihood it's some weak attempt to gaslight others... with nobody except their own cult convinced of it, of course. Like, literally, the confederacy led to civil war, so these present supporters are implying that civil war is patriotic. It is, though, remarkable that despite losing the war centuries ago their last symbolic 'stronghold' (state flag) wasn't taken down until this year... a lot of traitorous politicians.
But wait, I've just come across something even stupider... supporters of Duda in Poland holding that flag. Like, what? I'm attempting to mimic the mental gymnastic, I swear, but I'm not that flexible... do they, like, want to become a colony of a country thousands of miles away? Or, more accurately, travel back in time and join the confederacy in their forever lost cause? Some people, I swear, are hopeless themselves... it is, truly, remarkable how cultists find ways to dig deeper into the well of stupidity.