No, they are not lying. And yes, OUTER wings were swept to correct for CoG - and for OTHER reasons as well as they state on their site.
And yes, the design benefited from the swept wing even if it was only a moderate 18.5 degrees.
And yes, at one point the inner wings were swept back, not for CoG but because of wind tunnel data/testing.
And yes, there's still the question why the designers went the more difficult way of wing sweep when they could have repositioned the wing.
And yes, you still do the same, just keep on repeating loudly and often one single fact out of many.
Bottom line is that the 262 was an advanced design, the first jet fighter with swept wings, its high speed performance benefiting from those swept wings, proven and known at the time due to its high speed trials.
This advanced jet fighter design influenced postwar aircraft development.
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