I think you're simplifying it too much. Kids -- and often adults -- follow the example set by other people without any particular attempt to indoctrinate them. I don't think you need to encourage uncritical belief from your kids when the majority of the people around them believe the same thing.

Not to downplay the fact that indoctrination does frequently happen. I just don't think it always happens, and exceptions seem to be quite common for the people around me, though I don't live in the US.