I am struggling to believe it.
I watched a good portion of it and he was running the knife across himself and a lot of the time the knife was upside down. He didn't make any new cuts on the live. All the ones that cause the "bleeding" were there when he started the live.
At one point he joined a call with others and said "why am I not dead yet" and then proceeded to run the knife over his body making weird noises, but again, multiple times was the back of the knife
I don't know if that makes me a bad person for not believing but I'm sceptical