I think genetics is a big confounding variable here. If creative parents enforce fewer rules and creative parents have creative children, creative children will

I think genetics is a big confounding variable here. If creative parents enforce fewer rules and creative parents have creative children, creative children will have fewer rules even if having fewer rules has nothing to do with creativity. In this scenario, if some atypical creative parents enforce many rules their children will still be creative, and backing off won't help your children if you are not creative.