Selectively taking incorrect statements from one side is a way of technically being truthful while pushing one sided information, i.e. it's propaganda.
The garbage thrown about by those British publications is propaganda. Day in, day out, from many-many more publications, not just a puny web page.
So it was made for officials to rebut lies printed in the media about the EU.
I take it that you don't mind "journalists" printing lies as long as they're lies that support your point of view?
No matter how many reports got wrong, they don't hurt the reports are factual and correct.
They're refuting British lies.