Fortuyn was certainly not my kind of person or politician. But what Fortuyn was personally, and what he represented politically are distinguishable. For example, is pedophilia an issue in the program of the List Pim Fortuyn? Did people vote for him because he supported pedophilia?
As a political phenomenon, Fortuyn represented the wake-up of a very permissive society to the fact that multiculturalism is not compatible with any version of western freedom, not just the extreme version of the Dutch. Western freedom, even if it is based on universal truth, is only honored in cultures which have cultivated the art of seeing and respecting such truth. Western freedom has many healthy and unhealthy versions, but there are some cultures which are incompatible with all of them. We have to choose between allowing such cultures to take root in our midst and continuing the tradition of western freedom. That is the important point Fortuyn saw and seems to have communicated to a lot of Dutchmen.
This is a very important move, because only the Left can end multiculturalism - if the Right had the power it would have ended long ago! It wouldn't end the cultural battle between Left and Right, but it would put the battle on healthier ground, if there was a consensus that no version of freedom is safe without an intentionally nurtured culture that respects freedom.
Politics is the art of the possible, which means it is necessary to strike alliances with people who agree with us on the basics. Excessive purism is a prescription for futility.