The problem with your premise is in the black community "discipline" always has to devolve into a beating or some borderline cruel and unusual type of humiliation ritualLets say you look up stats on people who end up succeeding. Say graduate college and end up with a good job, and loving their families. Do you think the percentage of people who were beaten a lot is higher or lower than average?
This argument can always go both ways. There are plenty of highly successful people who credit their parent's discipline as the reason they are able to make it to where they are.
Again the elephant in the room is the parents severe lack of communication skills. There's also the issue of a lot of black parents seeing their kids as bills with feet, thus an object, thus a slave. There's a ton of unresolved trauma with black adults and their parents in this regard
This discussion can get so much deeper and nastier but I really don't think y'all want it to