There are already many one-star reviews for this Add-on, with most of them writing it off as leftwing propaganda or conspiracy. The creators have clearly outlined transparent and objective criteria for judging news-websites, which also can be viewed for each website with a detailed report on how and why the judgement was constructed in an understandable manner. These judgements have nothing to do with political orientation, but are based on general good practice in journalism (proper citation of sources, conflicts of interest and source of money made by website).
There criteria can be very helpful in identifying fake or misleading news as well as propaganda. No contents are blocked, so censorship is not an issue. It is a highly informative application.