Perhaps it’s you who can only see what you want to see here, since you claim that family structure is the most important feature of African immigrants. That seems like quite an arbitrary choice. But the finding that African immigrants both do very well and have your preferred family structure can be explained by the exact reverse causal sequence: doing well materially means you can form more stable two-parent families. And in order to move to a country with which you don’t share a land border and which has fairly selective immigration policy, wouldn’t you already need to be someone who’s better off than average in your society? This all seems like pretty strong evidence that the causal chain is from better average material wellbeing to better average success with two-parent family structure. The claim that family structure causes material wellbeing needs more than correlation.

As for the rest of the stuff you said after that, well, honestly that’s one of the most vile things I’ve read in a long time!