They've decided to make a landing page that tries to be splashy rather than one that inspires confidence.
But here's the thing, I also did look at the About page, or part of it. The top of the page is a video (blocked by Privacy Badger), and then they're saying that they are funded by selling things.
The New York Times quoted someone from Examine.com, but that was at the very bottom of the article. They do link to a few pages, but I'd definitely not argue that this is a ringing endorsement. The Washington Post article is similar. They don't link to any BBC or The Guardian article, so I don't know how those sites come into play. I'm not familiar with Medpage Today, and Men's Health isn't a source I turn to for hard research. Let's not even go into Forbes.
At that point I gave up on the About page.
Now, more specific pages do a better job, and do cite actual studies. But even then there are confusing areas. Consider the "Human Effect Matrix" - something that should be making things clear as to what their meta analysis has found: I see the section "Magnitude of Effect", and I see values such as "Minor" with a blue arrow pointing up, or "Minor" with a red arrow pointing down. Now, yes, I can read the tool tip at the top of the section and infer that blue probably means increasing effect and red means decreasing effect, but for many people this isn't going to be clear at all. It's also not always clear if these are positive or negative effects without digging much deeper.
So when we get into parts of the site that are more detailed, they're not clear enough for the average person on the internet, and could easily cause confusion. --That's actually a very good reason for Google to not surface them. Which sucks, because I think people are right that they do have good information, they're just not presenting it well.