The statement is a broad rhetorical remark, but it is supported by public evidence: by 2011 there were clearly strongly permissive libertarian views on pornography, and UK parliamentary materials described some pornographic material as being at the “very extreme end of the spectrum,” showing that the debate included positions many would regard as extreme. The word “extreme” is subjective, but the underlying claim that such positions exist is accurate. (libertarianism.org) Sources: Libertarianism.org, Stanford Encyclopedia of Philosophy, UK Parliament Joint Committee on Human Rights.