I read it like that as well. I've seen this idea illustrated this way: a kid raised in a religious community gets drilled from an early age about morals as an umbrella abstraction (in the form of allegories from religious texts), so they don't need to be micromanaged about the moral implications of every individual scenario under the sun ("don't run in the supermarket!", "don't push your sister!", "don't yell in the hallway!", etc etc) because they are explicitly exposed to an underlying set of values to govern every scenario.
That's is an obviously religious leaning take (I heard it from a jewish person, though I'm not jewish myself), but I think there's a certain grain of truth in the sense that non-religious people don't have a standardized way of talking to kids about morals as an umbrella abstraction on a weekly basis, in a way that church goers do.