Sounds like your real beef is with Mac Miller. And essentially the only reason he was chosen is because he's around the right age, popularity level, and white. And if you're against the same prevailing stigma against interracial couples that still pervades popular media then by all means, we are on the same side in this discussion.
But that goes to blame more on hesitant label reactions to audience perceptions. I wouldn't fault the (great) song for it.