Since he's only hanging out in a cave in the "Acolyte" season finale ... it's possible this was the work of the Sith lord. There's a "Star Wars" theory that Anakin Skywalker has two fathers ...

The first legend introduces a Jedi called Lina as she encounters a Sith Lord in a dark and forsaken cave. According to the translation, “Lina was not afraid. She ignited her lightsaber ...