Actual evidence is to the contrary. Children , especially under the age of 7, are uncritical little sponges. They absorb their parent’s values and beliefs uncritically, almost as if by osmosis.
If they are raised by secular parents, the child wouldn’t absorb religion under the age of 7 unless they were exposed at daycare. That’s what I’m saying. If they absorbed anything from their secular parents, it wouldn’t be a belief in god.