I know that, mathanxiety. And I did stop doing it when it fell out of fashion to have a class that was a safe space to discuss such things.
My point was that was why I did it, when I did it. I was praised for it by Ofsted. They liked the fact that my class was enjoyed by a wide range of students, D - A* grade at A level, that all levels of achievement were valued, that attainment was measured on an individual level. All students felt supported in that class.
Then things changed and it became something of a crime. All of a sudden it was damaging, it was breaking confidentiality, destroyed self confidence.
That is my experience. How I used it. The benefits my students got!
As I said earlier, I can't help but notice that self efficacy, self confidence, sense of responsibility, acceptance of limitations, willingness to compromise and a more realistic assessment of possibilities were all lessened over the last decade I taught.
Maybe, when done well, there is something in a more old fashioned teaching methodology. Hell any blood methodology that hasn't been watered down by outdated education science, indiscriminately applied pedagogy and persistent meddling by consecutive Ed Secs!