The definition of "fake news" when I first heard the term more or less dealt with sites parroting outright falsehoods. It didn't necessarily have to be explicitly political. False gossip sites, outrage-inducing headlines to the wild side of the tabloids, fake business news (http://fortune.com/2017/05/30/fake-news-sites-local-business...), troll-ish article sites (ala the National Report), homeopathy woo (ala Natural News), and other conspiracy oriented venues (eg GlobalResearch, Infowars) were among the many types of "fake news" out there.
The political angle it has taken is unfortunate -- due to the prominence of "fake news" in the last US election; the net effect has been a devolution of the word into a snarl word for "I don't like your particular political point of view". IMHO what you are describing -- a news organization has a bias or opinion (strong or not), but still tries to maintain some degree of connection with factual data -- is not fake news.
The political angle it has taken is unfortunate -- due to the prominence of "fake news" in the last US election; the net effect has been a devolution of the word into a snarl word for "I don't like your particular political point of view". IMHO what you are describing -- a news organization has a bias or opinion (strong or not), but still tries to maintain some degree of connection with factual data -- is not fake news.