While I think you may be on to something in the larger sense, your choice of article and source definitely poisons the well. Any one that talks about “leftist” or tries to minimize systemic racism in order to push its own contention is going to to be suspect anywhere but Trump-land these days.
I do think that children who are raised by single parents have a different and somewhat more challenging set of circumstances, but I don’t think it’s the absence of a father that is the issue. I’ve known plenty of kids with a single parent, and they’re ok. Maybe not perfect, but then who is. And I’ve known as many or more who were equally or more screwed up by abusive, distant or otherwise less than ideal parents. Which is really the key- children need GOOD fathers, or at the very least GOOD male role models. Girls need them to model the sort of romantic life partners to look for in later life, and boys need them to be able to observe how to behave and how to navigate life. Both genders need them for the love and support they provide.
I get the impression that not only are a lot of the mothers in the black community single mothers, the fathers are absentee, or at the very least more disengaged. And not setting good examples for how to behave for either gender; the very act of fathering children outside of committed, long-term relationships is a prime example of being a poor example.
So I suspect that it’s more a question of children growing up without good male role models who are consistently in their lives, than it’s a question of marriage rates or nuclear families.