i think a lot of this has to do with the one of payment he is offering per child,$8000 dollars now i think or soon to be.
the young girls (16/17 year olds) see the dollar signs get pregnant.and dont really understand the real cost of bringing up a child as a single parent.
$8000 dollars does not go far and soon they are feeling the pinch and pressure.
little johnny is just a bandaide distributer,
he wins by short term fixes that make people happy for a while.when they realise the real cost it is to late and he is back in the drivers seat.