Yes, Iraq had chemical weapons or at least the ability for “rapid restart” as the article says.
I also recall several stories in 2003 in the weeks before the US invaded Iraq that the UN had determined that large convoys of semi-trailer trucks were seen heading from various places in Iraq to Syria, around 1,200 of them. That story seems to have since been purged from the record as searches for it pretty much come up empty. Maybe it was legitimately debunked but I haven't seen that explained anywhere. Curious whether anyone else has that recollection and knows what happened to that information since. Interestingly, one of the pics at the end of the linked article seems to show a large number of trucks lining up to convoy out.
What is the shelf life on these chemical weapons?