I am not even sure where you get "smashing a device violently in front of a child" comes from. He said gets the hammer as in he would perma destroy it.
Anyway I tend to agree for the most part anyway. I was just making a guess about your age irl based on what you said. However some other data actually indicates you are likely gen-x.
Trying to scare children into following rules does not and will not end well.
> I've seen this done, it works.
You think it works because the child has realized that they will need to be better at hiding their actions in the future.