Um...you do know about the amount of cultural erasure that was carried out on nonwhite populations across American history, right?
I'm talking things like schools that Natives were forced into to convert them from their traditional religions, cut their hair, and make them adopt European mannerisms, all as colonizers built over their land and erased signs of their presence and culture; enslaved Africans being sorted specifically so they could not easily bring their traditions with them after being abducted; Mexican people who lived in the American west suddenly having their legitimacy questioned because the US took the land they lived on from under them but had no plan to accommodate them; Chinese immigrants forced to only accept certain jobs by law, and being made to change their cultural hair and clothing or risk lynchings and race riots; the list goes on.
To call "a few statues designed for no other reason than to inspire racial terror" being taken down an "unprecedented level of erasure" first supposes that the Confederacy was a "culture", and also ignores pretty much the entirety of American history.