What's fraudulent about them is not their papers (there are none of any relevance to speak of) but their character. They are both self proclaimed misunderstood geniuses who have been denied Nobel prizes in spite of their revolutionary discoveries (in 3 different fields, Physics, Economics and Evolutionary Biology). In actuality they are narcissistic master charlatans with delusions of grandeur.
For an expert's take on Eric's claims specifically, see https://www.cantorsparadise.com/eric-weinstein-how-not-to-fo...