Feminism is founded on the idea that males and females are equal. Biological research over the past 30 years; specifically from the fields of genetics, behavioral ecology, and evolutionary biology; directly contradicts this premise. Evolutionary biology research tells us there are sex differences in human males and females during all phases of the human lifecycle, including prenatal, childhood, adolescence, mating, parenting, grandparenting, and death. Behavioral ecology tells us we see these same effects in non-human species too. Genetics tells us these traits are heritable and not socially constructed (for example, the correlation between a parent's IQ and their child is around .80, even accounting for adoption).
How does one reconcile evidence from a field of science, that directly contradicts one's own beliefs? To protect one's identity, to avoid the cognitive dissonance, the obvious answer is to discredit the field, discredit the arguments, and discredit the person citing it.
That is why there is a concerted effort by Feminists, and supporters of feminism in the media to squash statistical evidence that goes against their ideology.
It is akin to telling a Christian that God is not real. You will receive a similar response. Heretics must be punished.