No where in the article is this mentioned. I'm almost inclined to think that this "article" is another one of these that has been surreptitiously sponsored by an industry - in this case not the pharmaceutical industry but the meat industry.
Anyhow, read for yourself the convincing data about why our ancestors were probably seafood eaters and not hunters as has traditionally believed. Furthermore, if you simply ask yourself how many restaurants there are in the world where meat is served raw - which for species which are truly carnivorous is the way it is consumed and to which their digestive tracks have adapted - vs. how many there are where seafood is served raw. Sashimi anyone?