Bring on the Church Nazis! Commit a sin and lose your parental rights! The problem is it will be others who will decide what is sinful and what is not.
What would you say if it’s determined that the mother had an affair? Does she lose her rights to be a mother and the state gets the children? Or what if the mother wants them to join a cult and worship the devil? Does the father have any rights to intervene? If the mother re-marries and the new husband is mistreating the children. Does the biological father have any rights to try and protect them? Slippery slopes, my friend.
The point is, the father admited to REPEATED affairs! He was bitter at the church for disassociating him for his repeated (read: non-repentive) sins. His bitterness at the church led to his seeking public education of the children, to their own detriment. What kind of caring, loving father would send his kids to public schools in Wake County, North Carolina? I rest my case.