I think kindenough is making a point about how things can change easily. Its easy to go from “I am punishing my kid” to abuse in a split second and you may not know the difference especial if you don’t/can’t reflect on what happened. A small change over time will go unnoticed. I big change can go unnoticed if you are not watching.
What if I told you that this has happened with Kids and recorded with kid stand ins. https://www.youtube.com/watch?v=3mnG_Gbxf_w Not perfect evidence but the best you will find without signing a Tesla Non Disclosure.