"Servant leadership" is just another word for leadership. Good leadership is a service. It's certainly rare enough. But what people tend to mean with the phr

"Servant leadership" is just another word for leadership. Good leadership is a service. It's certainly rare enough. But what people tend to mean with the phrase is the opposite: that good leadership consists of and is defined as service. That's just service with a "leadership" nametag, and is insufficient when actual leadership is required.