Um, yes.
The Confederates gave up at Appomattox.
So?
The Confederates gave up at Appomattox after four years of being outnumbered, outgunned, and out-supplied. After four years of fighting an enemy that had a larger population, more money, and a more industrialized economy than they did.
Yes, the Confederates gave up at Appomattox.
What is the moral significance of that fact?
What does that have to do with whether the Confederacy was good or bad?
How, exactly, does that reflect badly on the Confederates, as this commenter seems to be implying it does?
The correct answers to these three questions:
There is none.
Nothing.
It doesn’t.