then yes, the article is hyperbole. Though I know they are stating during human history. Still, that won't get as many clicks. And yes I am quite cynical about "clicks" and advertising dollars leading to sensationalist headlines. No different than the Yellow Journalism period in American history during the 1890s.
I mean we could argue that Earth's hottest day was when it was forming into a planet. But leaving that period aside, scientifically the hottest day would have had to have been hundreds of millions of years ago.