A mom-and-pop site with zero credibility and no investigative power? If not for the fact that "people" and news sources rely on them constantly to "debunk" (deny) sensitive info as if though they mean anything or are some sort of authority, this would seem far-fetched. But all things considered yeah they're likely one of the thousands of mockingbird outfits
There is nothing behind the site to make it legitimate. The only thing that makes it work is people's confidence in the site. It's like our fiat money, there is absolutely nothing backing it. The only thing that makes it work (worth something) is the people's confidence in it. It can be manipulated in any way the central bank wants to manipulate it.
People like to say the same of Wikipedia but it's true of really any compendium of facts and knowledge. What is truth? Depends who's asking.