They left out the obvious things that tend to reduce the number of offspring: birth control, distractions like video games, fear of losses in family court, choi

They left out the obvious things that tend to reduce the number of offspring: birth control, distractions like video games, fear of losses in family court, choices that lead to prison, the fact that women no longer need to please men in order to survive, obesity/diabetes/cardiovascular issues, and the tendency to dislike spreading resources thinly across numerous children. People who overcome those impediments to reproduction are the evolutionary winners. The changes can be physical, mental, metabolic, and/or anything else -- it doesn't matter because evolution doesn't care how the job gets done. People of the future will be more like those few people of today who are effective at overcoming the impediments to reproduction.