There is nothing evolutionary about human monogamy, it is all cultural. Instinctively, humans are not monogamous, neither male nor female. Something which is completely evident for people who have lived outside of an academic library.

So their entire premise is false and proven false beyond any doubt.

> The ‘monogamy hypothesis’ holds that the evolution of highly cooperative social behaviour is more likely to occur in species in which parents mate monogamously and produce full siblings

This is not evolution when it comes to humans, because it is not genetical. It is cultural.