For what it is worth, I live in Pittsburgh, but am a great admirer of Lee and the bravado of the Confederate soldiers. Robert Lee, even recently, appears on postage stamps.
What seems to be happening is an effort by politically entrenched people (like the Jacksons and the reparations crowd) to use the parks to paint the CSA as Nazis.
The focus of the battlefields should be about the battles. Why else do they think people visit them?
As someone else said, the legacy of slavery is much better suited to a museum in DC.
I would hope even Walt would want to preserve the battlefields as battlefields. I used to like to drive to Gettysburg and bike around. The workers telling the events of Pickett's men charging fearlessly into a wall of gunfire was always riveting. I hope this will not change, but from what I have read, the 3 leftist professors decided this was "Southern Bias".
PC is a cancer upon our nation.
BTTT.