Honestly I don’t know what all makes his style unique. Almost all of his content I’ve seen seems outside spiritual circles. The first time I saw him was on 20/20 as a kid and he was making Guinness World Records with his cold endurance. So I think a big part of his brand is bringing something like what Tibetan monks do to people that think spirituality is all in your head. As far a personal experience I’ve always been able to do something similar with the cold at a low level. I also was able to get to a 3min breath hold with that system and had some kind of high from it that lasted 24hrs. As far as I can see it’s a simple easy to accept for the spiritually wary to experience energy methods that were previously only for initiates. He also helped spread the cold exposure craze in the fitness community. So don’t look to him as a spiritual guru, but as a teacher of practical methods originally developed by spiritual teachers.