It is The Guardian a left leaning UK newspaper, that should give you an idea of why the article might appear unbalanced. One does not read the Guardian to get a balanced story for the very same reasons one would not watch Fox News

Tho' they don't hide their political bias, and it is often interesting reading same news stories in the Guardian (left leaning UK paper) vs lets say the Telegraph (right leaning UK paper) for differing view points and then making up ones own mind.