I would say that the majority of the “San Francisco” style bands were very much into TM, and it ruined their lives in most cases. Moby Grape, Janis Joplin, Jimi Hendrix, Otis Redding, and lots more took a dive into a black hole forever.
I just looked up TM, or Transcendental Meditation, looks like it is some kind of New Age Indian spiritual BS, not quite the same thing as actual Satan worship.