Why does it makes sense that thaddeus stevens wanted the whole fabric of southern society to change?

Thaddeus Stevens is huge revolutionary in the south in the matters of reconstruction and some of his views even differed from Lincolns too. He wanted the whole fabric of the southern society to change and it made a lot of sense because the south would have never been and it never was as what it is now which is true republic.

Stevens was a man loved by many, despised by even more. Some described him as a nasty man, and it is true he used his fearsome with as a sharp weapon but he is also a man whose idealism was bone deep. He believed that the whole fabric of the South must change so that the manners, institutions and habits be revolutionized and be free of their pro-slavery heritage.