We shouldn't hate on Arabs or Bantus. Neither is acceptable and we should really take a proactive approach in eliminating the hatred and prejudice that is spread on this site.
As for the reason as to why it seems that the people on this forum are fine with dissing Bantus and other black people; it is most likely because a significant amount of the people on this forum are from the UK and the US. Both of these diaspora groups have been bullied by black people growing up, especially the UK Somalis. As a result, they come to this cauldron of hate and extremism which we call a forum and spew their vile shit. This site acts a safe haven where they are able to release their internal turmoil in the form of racism. I guarantee you if they were bullied by Arabs instead, they would have been the target of their hatred.