I tend to agree with you (recognizing that there are many families for whom this is not an option). The consistency is also exceptionally important with bright children, as they will, among other things, be more likely to a) find a way to split caregivers with different practices; b) lose respect for one or more adults in their system; c) feel stressed and insecure from having to negotiate multiple, contradictory sets of norms for behavior.

...pronounced like the long vowel and first letter of the alphabet...