This is a super important point, and I've never seen it expressed more clearly. Unfortunately, many adults who are responsible for caring for children do not seem to understand that distinction, or they are too overwhelmed and spread too thin to apply that knowledge effectively.
The "discipline" referred to by the article more often boils down to punishment for misdeeds.
One form builds up a person into a better version of themselves. The other is intended to break the spirit of the person and make them submissive.