It is not so focused on vocal techniques, but rather of voices edits and enhancements of the performance. I have watched some videos of this Youtuber for a while though not sure I always agree but it is still intereting to watch. Thought especially @CloisteredFlame might enjoy it
https://www.youtube.com/watch?v=9s5zKz-56-c
https://www.youtube.com/watch?v=9s5zKz-56-c