The quote doesn't give that impression in context, including the comments - it's actually a statement about the importance of the rule of law. From the comments, Nick notes:

Indeed, the moral principle of non-initiation of force, far from being a possible basis of society as Murray Rothbard and David Friedman would have it, is a sophisticated outcome of long legal evolution and a highly involved legal procedure that itself cannot stick to that principle: it coerces people to a certain extent so that they will not coerce each other to a much greater extent.