Big difference between discipline and abuse - not sure if you are saying the Bible helps those who want to beat their kids or if it was tongue in cheek.....anyone can twist the meaning of anything to "justify" bad behavior or even to slam productive behavior. Those on the Left who think killing/looting/rioting are valid forms of expression could have benefited greatly from early discipline.
I’m simply saying that if you take that quote in isolation and at face value (its most common usage), it justifies virtually any level of violence against children. There’s nothing in that quote to discourage beating a kid within an inch of his life on a regular basis and claiming it’s a form of love.
That sober, responsible parenting fantasy of measured spankings in only appropriate and necessary circumstances is a fiction. It never happens like that in the real world.