I think that no one is trying to say how everyone should raise their children,
@Marie Mallory . Each parent is different,each child is different. What is effective discipline with one child might have no effect at all with another child, even though they are siblings with the exact same parents.
As far as discipline; every child needs discipline, but that is a far cry from the brutality that some children grow up with.
Sadly, some Christian parents can be the worst disciplinarians, and don’t get the right mix of education/teaching and love happening with their efforts at being parents.
If a child is too young to understand reasoning, sometimes a swat on the behind is an appropriate method of teaching them not to do something that is dangerous to them.
Once they are old enough to listen to reason, then most physical punishment only creates resentment, in my opinion.