The GOP knows they aren't winning the black vote. They just don't want to openly be the "White Party" because that spooks their Jew handlers. It's their role to wrangle their white voter base into supporting shitty, self-destructive views and policies. They want their white voters to be deracinated and politically impotent. The GOP isn't trying to sell themselves to black voters. They are trying to sell their own brand of diversity to their white voters. That's the point of this type of messaging.