On the contrary, those post war actions by Sherman in an already devestated south continued the animosities for a century. They did, however, reduce the southern industrial capacity to a shambles and ushered in a century of Northern union building.
If one followed the utilitarian concept of punishment, it appears the end justifying the means employed by the Yankees in the War of Northern Aggression resulted in calamity for the entire nation.
The commitment of a nation to total warfare for 4-5 years did more to erode hostile proclivities than did escalatory violence, however the continued use of force resulted in unequivocal determination of the victor.