The Guardian has been comprimised as a news outlet for some time, after they tried to report on the Snowden case. They are just flypaper for for the left nowadays.
From hackernews a couple of years back: https://news.ycombinator.com/item?id=20937555 (How the UK Security Services neutralised The Guardian )
Futher reading: https://www.opendemocracy.net/en/opendemocracyuk/five-reason... (narrator: but they didn't do anything about it..)