The author conflates two completely different kinds of strength: (1) the ability to do physically demanding labor; and (2) resistance to disease and deprivation. It’s long been known that men (in general) are physically stronger in the former sense, and “weaker” in the latter. The fact that women tend to live longer than men has been an actuarial assumption forever.
In fact women are subjected to a much more serious and systemically more widespread cancer danger than men because their reproductive systems are so much more complex.
Women are not "biologically" stronger than men. They are behaviorally more risk averse.