Incorrect: https://www.engadget.com/2019-07-29-lion-king-remake-vfx-mpc...
The film was shot almost entirely in Unity, then the final render used some extra stuff and other tools. But the scenes, shots, etc were done in Unity. A quick google shows you this.
https://www.youtube.com/watch?v=WupuXjvO9uA Making of videos on Youtube, you see the Unity editor in many places while they film in VR