Simply by covering "manufactured" diatribes in a seemingly-detached manner for a long time, a newspaper is de-facto endorsing the instigating side. The famous "let him deny it" mechanism is well-known. The amount of space the Guardian dedicates to specific topics is very telling in itself.

(This said, I personally don't see it as a "neocon paper" by any stretch. They are simply positioned in the "blairite consensus", an area that might occasionally overlap with some US neocon positions -- mostly because some neocons do move from an ideological progressive position.)