It shouldn't have been surprising to any of you.
Eminem is a direct beneficiary of White Privilege, in a country (system) dominated by White Supremacy. Why is it surprising to you when a White person says they don't like n!ggers? He, like so many of his peers and ancestors, are/were so consumed by race. Then you had (like with any race), your "good" who were more concerned about integrating us all together, and not separating us by n!ggers and the ideology that "white is right." If MLK, Rosa Parks, and Malcolm X allowed Eminem's kind to be the representation, then we'd all still be sitting in the back of the bus and drinking out of water fountains designated for "coloreds only."
The difference between Eminem and someone like Janis Joplin is that Janis was not consumed by color. When she was growing up, listening to Blues and Jazz and idolizing Bessie Smith and Billie Holiday, she never thought of it as "n!gger shit" , and never went on record on saying "She's only in this shit, to make a bigger hit."
I think Eminem is racist because he dropped the N word in a completely offensive and derogatory way...and in a way that was counter-productive to the art that he apparently has so much love and appreciation for. He apparently respects it, but refers to it as "n!gger shit."
Are you serious?