I think people develop competence and responsibility in response to their environments, and that the State is a legitimate part of everyone's environment. No, I don't think that the State can make people more competent and responsible, but it can implement policies that encourage and reward these traits-- or it can refrain from implementing policies that suppress them. Part of the problem is that most people who make similar claims is that they primarily believe in punishing people whom they view as "irresponsible", while doing nothing towards (or deliberately withdrawing from) supporting their ideal of responsibility.