It's commonplace of course to see mixed-race families in real life, or on television programmes, and thusly seems fatuous to even acknowledge the 'normality' of it. I can see though how it could seem a little 'odd', in terms of perception, to see an unequivocally 'white' and 'black' permutation of singular parent and baby, in isolation on such a small-scale medium as on a piece of packaging - not for one second that there's anything remotely 'irregular' in that scenario; just that it does 'stand out' visually and thus, potentially, detracts from the actual advertising focus.
I can only agree though that it was needlessly (and bizarrely) focused upon and harped on about in the programme.