The article mentions traditional hormonal contraceptives don't work for men. This is a new approach, blocking a targeted receptor. I'm not aware of any such contraceptive for women. The apprehension in that case is understandable as it is not backed by the same experience as hormonal methods
Birth control doesn’t destroy all of a woman’s eggs.
But sperm is constantly produced. Eggs aren't.
There are plenty of guys that don't want to have kids and hate using condoms. This could be an option.
There are plenty of kids in the foster system that would love to be adopted
There are surprisingly few children in foster care eligible for adoption. I’ve looked into this. Foster care is temporary care, and many children “in the system” are staying with family.
I wouldn't call >100,000 kids surprisingly few, temporary foster care is indeed a much larger body at over 400k, so around a quarter are looking for homes.