"...I assume that's to prevent that power from being misused and not for the sake of it." It puts more emphasis on why Noctis keeps the ring on him. The lives of anyone who approach that ring are in question. Whether they use it to protect the kingdom or not. "...what happens to the worthy?"

He hadn't said they burn. But he hadn't said what happens to them either. He places his hand back on the Lion. "Lions only power up for people they deem worthy of their trust. That's the basis of being a Voltron Paladin. Trust and respect the Lion and your teammates."