As a lifelong Yankee I don’t really have a dog in this fight. But I do think this is insensitive and disrespectful to the families of Confederate soldiers who may be buried in those cemeteries.
Its not only disrespectful, I believe it may be illegal and downright treasonous.
Confederate war dead have exactly the same legal status as any soldier buried in Arlington today by an act of congress.
It was the Yankees who blocked off coastal trade to the South and enacted tariffs to further squeeze the South - the real reason for the southern states to pull out of the Union.