No, I don't think so. I am an economist; I understand the issue. I'm saying that if you start with a government intervention, there's not anything unlibertarian about advocating a further intervention to make things less bad, provided that you oppose the initial intervention.

For instance, libertarians oppose government-created monopolies. But given a government-created monopoly, it's not unlibertarian to support regulating it. The optimal libertarian policy is obviously abolishing said monopoly. The second-best one is regulating it. The third-best is letting it abuse its power.