One problem is the internet itself. Newspapers used to be a complete product that was consumed entirely. Now we can click single articles. This produces two problems. One is that we click our own filterbubble and the other is the promotion of entertaining and easy reading articles. When I last used the BBC Android app in 2014, there were many article about political issues. When I tried it in 2016, it was all blood, crime, cute animals and other entertaining, but irrelevant stuff. The stuff people click on. So it gets promoted. And the people that write them get promoted. This seems to have a profound effect, even on the BBC.
The Fox News propaganda machine and garbage papers like The Sun in the UK misinformed readers with their intentional bias long before the internet.
Added explanation: There is news that is entertaining but irrelevant to us, because it doesn't effect us. Like crimes or celebrity news or other 'interesting facts'. Then there are political issues that effect us, like laws and deliberation of laws. Those are also news. A newspaper has a mix of both. The internet seems to promote the former in all media.