please give me a break
Well times change. The Confederate groups have recently been trying to rehabilitate the image their symbols have across the country with mixed success. I personally don't see the harm with honoring the grave of this black man who served his master in the CSA army as a child.
However, it is only a matter of time before this grave marker and others like it are used as evidence that thousands of black men willingly fought side by side with their white counterparts to protect their homeland and way of life.
The propaganda artists on this forum have already begun the process by implying the boy was killed in action.
It is useful to remember that Lee's horse was honored by these same groups decades before they sought to honor any black Confederates, as you pointed out earlier.