All advertising supported news runs the risk of turning into "content;" that is, of existing primarily as a circus attraction to get an audience into the advertisers' tent.
In the distant past, professional integrity enabled journalists to get actual news into newspapers. Perhaps that was because the people who chose to devote their lives to journalism, even the editors and publishers, were interested in contributing to society by acting as its eyes, its ears and, on occasion, its conscience. That's always been in conflict with people who view their work as a way to raise money for themselves, and don't give it any thought beyond that. Of course, few people exist at either extreme; most of us are somewhere along the spectrum.
There's a Darwinian process taking place in journalism as elsewhere. What survives will be what attracts people -- that is going to be something that brings in enough money without rendering itself so distasteful that people with disposable income universally reject it. The fitness landscape is being altered as we speak by the increasing income inequality of our society. Magazines selling Rolexes will do well, as will newspapers that cater to the lowest common denominator that can still buy anything.
If I were you, I would not be searching for truth in ad-supported media; what you get is either "content" or propaganda the owners liked investing in. Google just sounds a bit more clever and experimental in its thinking than the rest.