You attack Libertarianism on the grounds that it has adherents that disagree widely on several topics. So does that mean that if I found some Objectivists that

You attack Libertarianism on the grounds that it has adherents that disagree widely on several topics. So does that mean that if I found some Objectivists that disagreed on points of policy, that Objectivism would "mean so many things that it means nothing?" Your argument certainly seems to imply as much.