Of course she is. If she were in Iggy's place success wise, she would give 2 flips about "issues". She is angry at the fact that her music hasn't caught the attention of enough people. She is angry that she isn't succeeding commercially.
When I think of the true classic house songs, there are always black singers... and just about every form of dance music today stems from disco... do your research before making such a fool of yourself.