Those who recognise that they are traumatised are no longer traumatised. It is a Catch22. As soon as I say "I'm crazy", I'm not.

When adults, as in the video, get excited about talking about themselves as traumatised, then realise that their encounters with their parents can recreate such experiences and yet pretend they don't know that, they are behaving like people who have gained an important insight and then ignorantly throw it away, that's right.

Talk of sacrificing oneself in this context, is linguistic rubbish, a mendacious form of language use that suggests that spewing hatred and loathing has anything to do with a sovereign self. Participants merely hope for legitimacy/permission to "just let it all out" (by the group or its leader).

I once went to such groups myself and experienced or participated in the strangest kind of play. It's hard to describe, a kind of disbelief at how excellently you can act your way into something. Faster than you can look, you are fascinated and impressed by it yourself and play along.

Groups like this are a perfect prey for people with a great need for recognition and low self-worth.
We all know the theme, from group leaders who lead lots of people by the nose because of their high charismatic quotient (without always knowing it themselves, if one believes one's own role completely and without any doubt).

It has potential though but I think it needs a very benevolent and highly skilled director. Otherwise, the group dynamic goes bizarre.

the willpower to rise above it

that is it.