It's a much more straightforward issue of media literacy. The Facebook feeds of most people are littered with "news" from anonymous sources with unknown funders and unknown agendas. This created a major vulnerability in the media landscape that has been ruthlessly exploited.

I know Vox, I know their editor, I know most of their leading journalists. I know their political opinions and their potential biases. I don't necessarily trust them, but I am forewarned of their agenda and forearmed against any conscious or unconscious efforts they might make to influence my opinion. I understand the world view that Fox, CNN, The Guardian, WSJ, HuffPo and Drudge are trying to sell me. If I learn about something from one of these sources, I know how to find a contrasting perspective.

I have no idea who is behind "American Journalist", "Political Feed" or any number of other anonymous "news" publishers operating on Facebook. I'm a reasonably savvy media consumer and know not to give them credence, but the lack of an explanatory framework for their biases makes me much more vulnerable to subconscious manipulation. My psychological immune system hasn't been inoculated against these pathogens, so to speak.

This is a serious issue with stark ramifications and we shouldn't be so glib as to dismiss it as just media companies fighting a turf war.