His entire argument loses to biology, until the biology that enables supposed inherent statism changes (gene therapy has a long way to go).
In many families it’s pretty clear what is reasonable & unreasonable obedience, which may have to be resolved through conflict between family members (such as arguing, which occurs all the time).
This of course, prevents the idealization of a “nu” anti-statist model of family that will probably never occur until people whom are self-admitelly anti-coercive, anti-state, etc. start only breeding amongst themselves, possibly in more than 1 or 2 numbers of children, as a way of establishing a permanent population that will carry on, at the very least, anti-establishment memes, and the most, anti-statist views & culture.
Admitelly, the above gets into voluntary eugenics (not dysegenics, please look up the difference), & not everyone likes that, among one of the reasons, because it’s not humanistic, despite the fact that individuals engage in eugenics on an unconscious level by choosing a mate to have kids with (although that is not the only drive in choosing a bearer of your children, obviously).