[Tax-chick]

... He misses out on a mating opportunity. That's a huge cost in terms of reproductive success."

The author appears unaware that present society is almost totally oriented around sterile sex acts or artificial reproduction, not natural procreation. Perhaps she's extrapolating from observations of lemurs, or some other primate with a survival instinct, rather than researching present-day human beings.

[Harmless Teddy Bear]

Ouch!

But true. People nowdays seem to be shocked when sex results in a child.