It depends on how it's done imo - there are tasteful ways to honor the fallen Confederate soldiers imo, without also simultaneously portraying them as heroes.
There are 400 buried in Arlington under headstones that differentiate them from the rest of the people buried there. They are also facing inward to remind the rest of us how they turned their backs on their nation.
That's probably more than enough "honoring" than the entire Confederacy has collectively earned.