For instance, this statement "He long maintained the hereditability of IQ and personality traits."
We will leave aside the IQ question. Let's go to the point about hereditability of personality traits. Anyone familiar with dog breeds knows that that is the case. Border collies have one set of traits relevant to say, hearding, and Afghan Hounds another trait, perhaps useful for surviving in the cold weather and harsh climate of Afghanistan but which will drive any normal human being insane. Wolves are different from domesticated dogs. There is almost no such thing as a trustworthily domesticated lion. Domesticated cats are commonplace.
Of course there are variances person to person, dog to dog, etc. But there are consistencies as well.
The article gets around to the actual fraud in the 13th paragraph; it has nothing to do with heritability or IQ.