Think of it this way,on grounds of morality South Africa has taken the stance the whole world should have taken but have been reluctant to up till now due to the controversy surrounding Israel and this plaint against Israel coming from a country that has an apartheid history is very significant since they're fighting to end the genocide and apartheid regime in Israel
Secondly it is inconceivable that Africa or other nations termed developing or the global south could undertake such actions especially against Israel which enjoys the backing of the USA so this in itself is a further win for Africa since Africa is now increasingly asserting it's influence on the global stage and setting itself up as a dominant player in global geopolitics,this preceded by the admission of the African union into the UN security council further gives weight to the argument