The TL/DW is that he mostly blames single motherhood for the hoodrat behavior.

Anyone whose ever met more than three black guys could tell you that.

The entire reason "Yo mama!" jokes ever worked ever is because black men are raised to worship their mothers as a figure close to the Virgin Mary herself. So when mama spends their entire childhood showing off being a degenerate, short term thinker who operates entirely on impulse (which mostly means drugs and random thugs dicking them down), they emulate that like any child does.