I think there are two sets of claims in the article. The first set - women hunt - is blindingly obvious and it was stupid to ever think anything different. The second set - women are better suited for endurance activities is dubious and weakly argued.

Timothy Noakes is as good a scholar as we have in endurance exercise, and he points out that all of the ultramarathon evidence is a bit dubious because the sport does not attract the best runners. So East African runners dominate the marathon scene (especially the Kalenjins) but are virtually absent from the ultramarathon world. Why? No prize money or sponsorship. So the fact that European ancestry dominates the longer distance is more a function of who’s running than it is a difference in physiology.

So looking at the role of estrogen in race times requires some deeper understanding of who’s running and what their overall potential is. I’ll note that the ultra scene is generally populated by an older crowd who are following the " if I can’t go faster I’ll go longer" approach. So maybe men maintain competitive marathon times later into life so are slower to join the ultra scene?

Noakes also points out that a smaller body size works for women in several ways - smaller bodies use less energy to move, generate less heat, and shed heat more effectively. So without correcting body size, sex based comparisons are not deeply informative.