Um, I think that was a horribly failed attempt at humor...
You have to remember to adjust to the intelligence of the poster when trying to decipher intent. When they're really gullible and come away from a Moore movie thinking they saw a documentary, the bar needs set somewhere below zero. In which case, his horribly worded post becomes potential sarcastic agreement.
Show me a bigger lie to the people from Moore than WMD in Iraq. How is any supposed lie by Moore worse than getting a nation to go to war over a lie.
A few points to consider.
Countries that were the opposite of happy about our intervention therein still agreed with the intelligence findings.
This country has shown itself completely incapable of keeping secrets, catastrophic intelligence leaks doing irreparable damage to war efforts and diplomatic relations are a regular occurrence.
The CIA might as well be the Mickey Mouse Club. For evidence, one need only point to Fidel Castro still being alive. The excessively long string of utter failures for assassination attempts were well in advance of the suicidal gutting of their capabilities brought about by later administrations. By the time Carter and Clinton were through restricting the types of people they could have dealings with, they weren't good for anything.
Last, and most definitely not least. Saddam Hussein was apparently convinced he had WMD as well.
Which is more probable?
The US government, with a long standing history of embarrassing failures in intelligence, was unable to correctly identify a shell game put on by the military to fool their own leader into thinking they were successful in keeping their stockpiles safe from the bombing campaign.
The US government, with a long standing history of embarrassing leaks that still continues today, has masterfully kept in total secrecy a massive lie over several years time that would have necessarily included tens of thousands of people keeping their mouths shut, many of whom were in the opposing political party, with quite a few of them having leaked other information over the duration.
I just can't see that collection of morons managing to pull off such an impressive feat.