It says it will be up on their blog soon, but I don't see it anywhere yet. And I agree, the article really says very little about what the title describes.
The other problem with this is that it still can't change human nature. Ok, so this plan is implemented and any site can serve google results and order them as they want with an API. People are still going to go to their favorite far right or far left outlets, which can now access google results and show only the articles that they know their users want to see. The "filter bubble" problem could even be worse than it currently is in this scenario.
I can see the poster's point of how it could lead to negativity in some cases, but like you I don't understand what the big revelation is here. Social networks thrive off more people interacting with more posts, so they show posts that have been interacted with a little bit to lots of people hoping they continue to get interacted with. That doesn't really surprise me at all.
Recently interviewed at Amazon and I got that vibe as well. Didn't really "sell" the job to me at all, just assumed I would automatically be in love with them. Obviously they're there to evaluate my skills, but in my opinion an interview should be something of a two-way street.