This appears to be actually true in Xinyang?
> Iraq aluminium tubes
https://www.ucsusa.org/center-for-science-and-democracy/scie...
It appears that they did try to buy the tubes, and they could be used for nuclear weapons (that's why they were embargoed) - but the evidence did not support that interpretation of their purpose.
A deeper point: journalism considers accurate reporting to be reporting that "X said Y" if X did, in fact, say Y. It does not consider itself bound to independently investigate the truth of that - indeed, attaching the reporters's assessment that the source is lying could be considered bias!