The document has been inaccurately labeled (I've seen a Slate op-ed making statements that are blatantly false) , but the people who are acting like it is some kind of academic work have apparently never done academic work.
The guy took a few academic sources and mixed in stuff from the New York Post. It's not well sourced. What people do see is an academic study linked and say "see, this is scientific", but most people aren't trained to read that literature so it's just psuedo-scientific garble.
Why is the tech world turning itself upside down for a mediocre undergrad paper?