The distinction between power-based and love-based discipline is not all there is
Power-based discipline is obviously a bad choice of parenting as it includes physical punishment like hitting or yelling. However, the love-based approach is not necessarily better if it includes love withdrawal.
Both communicate to children that if they do something we don’t like, we’ll make them suffer in order to change their behavior. The only remaining question is how we’ll make them suffer: by causing physical pain through hitting or by causing emotional pain through enforced isolation.