I have never said not to intervene. That's purely something you've manufactured. You can intervene in the case of attacks. Nothing I've said contradicts that. However physical abuse in the case of defense is different than physical abuse as a training mechanism.
Also you justify spanking. Again this is not recommended behaviour by child and family psychologists today. Your methodology is very old school from an era that's passed. Whether you continue to practice it or not is totally on you, but preaching it as advice in the face of science and then getting defensive when pointed out that science has moved on, is not healthy.
I will not be participating further in this discussion due to your strawmen arguments and discussion in bad faith. It is clear you have no intention to understand the current field of science on both child and dog behaviour.