The issues you describe is exactly why they breed as minors; the males basically live on the periphery of the females set up by the state in public housing with the food stamps and such. The males are also interchangeable; they move from unit to unit breeding with other mates.
Also leads to a lot of inbreeding over time in relatively isolated communities. After all, if a Trayvon doesn’t know who his old lady’s daddy is, he could easily be doing it with his half sister. There are very good reasons for keeping accurate genealogical records.