The “unjust” argument is a good counter. One could cite some neurobiology evidence that lack of discipline is due to complex cognitive deficits that manifest through delayed brain development even in otherwise normal seeming children, which belies the “parental responsibility/failure” view. To start with, cognitive deficits can be caused by genetic factors or other things which started before birth, and can stop children being able to function normally. [1]  [1] Tynan, W. Douglas, ‘Cognitive Deficits’, Medscape Reference, 3 June 2013,