Why are interracial couples in commercials always black and white?

I have seen different interracial couples in television commercials. I seen more racially mixed people who somely mixed with the black race shown coupled with white people than actual black people. There are negative comparisons and bad associations of the black race because of their physical features of racial appearances and lower rates of human development indexes so some black people and people who mixed with black race are noticeably more likely to indicate racial identity issues by being interracially coupled, or encourage their interracial couplings be seen as more accepted through helping them get shown in media advertisements. Based on what I have read about Argentina online, Argentinian government officials particularly encouraged European immigrants to naturalize to their country, which leaded to the black population being very small size in Argentina and the average Argentinians being mostly white mixed.

I don’t think them mixing with whites is going to make black people go extinct. I think the reason why there’s always commercials of black and white dating is to not to have it be taboo anymore. As it was taboo for a white female and black male to date years ago. They are normalizing it now and trying to end racism. Plus, now it’s the norm to have black and white dating, I don’t understand why it’s that way. We should see more Asian and black dating on porn videos or commercials but unfortunately that’s how it is