i mean, it actually makes sense.... to grossly simplify it, there are three types of wealthy black folks in america:
1) jack and jill, country club black folk. probably went to an hbcu or elite pwi. subtly look down upon poorer blacks, but still more likely to marry other 'jack and jill' -esque blacks.
2) black folks raised in wealth in predom white communities. parents never really emphasized racial allegiance with the traditional AA experience or just weren't exposed to it like that. this is where malia falls.
3) wealthy africans... largely in big cities, mainly professionals. also very insular. mix of #1 and 2