This isn’t mere “discipline” it’s abuse plain and simple. Morons like this guy who can’t tell the difference should be locked up.
God save us from people who do not know what real abuse looks like.
A lot of people out there must have lived very sheltered lives. The man is clearly wrong headed and he should be warned to discipline his child some other way, but pushing the Nazi State on him for this is far worse than what he is doing.