Here I'm quoting from the website:
> It should go without saying that you should never publish fake content. While my experiment relied on tens of thousands of unverified stats, I ran it in order to share the results with the public, and the website, while still live, now carries a disclaimer.
"now carries a disclaimer" sure suggests it didn't, so "you should never publish fake content" really doesn't seem like a standard the author actually held themself to.