Not really. From the first point about not finding any WMDs, they fail to provide a link for their claim that Saddam got rid of his weapons. We know he had weapons because he used them on his own people. There are no records of their destruction. You don't just throw a chemical or biological weapon away. UN inspectors couldn't find anything because they weren't getting complete, unrestricted access to the sites. Saddam kept moving things around so the UN couldn't get a complete picture.

The point is, even though it now appears that he didn't have any (by all accounts, they were moved to Syria just before we invaded), he was completely uncooperative with the inspectors which is what lead to UN resolutions which is what finally led to the invasion.

That website is misrepresenting the facts regarding UN inspections and the "destruction" of Saddam's chemical weapons (there is no documented evidence that that ever took place).