While I think some of their talking points are reaching, this one is not. One of the most damaging things affecting the Black community today is the lack of fathers in the home. A lot could and has been said about why that is (over-incarceration of Black males is one), but the purpose behind the statement in question, i think, is to try to make the best of reality. Try to adjust society in a way so that children of single parent homes can still thrive and not feel inferior because they weren't raised in an "ideal" family.
I think we can do that without disavowing the traditional nuclear family and I don't read anything there that implies that.