Being a bad parent is a sign of not having learned from experience.
Good parents use the mistakes they did in the past when they were young to advice the children God gave to them to prevent them from repeating those mistakes again. However, bad parents always want to be seen as right and appear "angelic and saintly" as if they never had horrible youth days.
Unhealthy families discourage individual expression. Everyone must conform to the thoughts and actions of the toxic parents. They promote fusion, a blurring of personal boundaries, a welding together of family members. On an unconscious level, it is hard for family members to know where one ends and another begins. In their efforts to be close, they often suffocate one another’s individuality.
Perfectionist parents seem to operate under the illusion that if they can just get their children to be perfect, they will be a perfect family. They put the burden of stability on the child to avoid facing the fact that they, as parents, cannot provide it. The child fails and becomes the scapegoat for family problems. Once again, the child is saddled with the blame.