childfree

There are two problems with your idea.

First, in a true "community" situation, the parents will have been giving to their community their whole lives. Most of the modern "it takes a ViLlAgE!" parents are entitled mooches looking for handouts; they've rarely lifted a finger for anyone outside of friends and family.

Second, disciplining children used to be a community action. Anyone from the community could chastise a child, or tell the parents and expect the behavior to be corrected. Many modern parents become the defensive "mama bear/papa bear" when someone doesn't worship their child (or worse, is critical of them). They may encourage their childrens' bad behavior, or make excuses for it ("kids will be kids").

TL;DR: Modern 'parenting' is diametrically opposed to "the village"

For me, child free means child free. I don’t have much to do with my nephew, because I simply don’t like kids.

No way. I have made the choice to not have kids in my life. I am certainly not helping someone else raise theirs.

Such parents certainly exist but in my experience, most are grateful for help. Again, iny experience, discipline can be tricky but not usually isn't too complicated. Worse case you can "tell on them".

As my edit mentioned, I agree that modern, 1st world parenting has gotten away from such evolutionary roots, but I think "diametrically opposed" is overselling it. For example, most still send their kids to school.