The reason it gets brought up so often is because Apple goes to this particular well over and over and over again. It's not an occasional thing with them. They make a deliberate effort to use black males with caucasian females in an astonishing number of their ads. It's gone way beyond representing reality and has veered into fetish at this point.
Even in group shots, the black males are sandwiched between caucasians. As if even touching another african american is "too black" for Apple. It's pretty vile stuff when you study it. And yes, ad agencies discuss details like that before submitting their work. I know all too well.
No other company is as overtly racist with their advertising as it relates to their refusal to show black couples or black families as Apple. I remember a recent Thanksgiving ad from Apple where they showed a black family having thanksgiving dinner together... wait for it... at a white family's home. That's right, they can't even enjoy Thanksgiving without white people to make them more palatable to uptight, closet racists.
I, along with many others, commented on how ridiculous that ad was. Guess you missed that one while creepily stalking my post history.