Middle-class welfare

In Affluenza, Clive Hamilton writes:

We are told that welfare payments for wealthy people act as incentives to take more responsibility for their own health care and retirmenet incomes and to have more children, while welfare payments to poor people act as disincentives to work and to take responsibility for themselves. It is not clear why middle-class recipients of welfare are deemed immune from its harmful effects. Support for single mothers is derided; support for wealthy mothers, in the form of the non-means tested family payments, just helps them meet the cost of having children.
What do you think? Fair call?