Yes, three helemets broken!
Nr 1: is a cop out ….mum drove over in the car when I was a kid, fell off the shelf in the garage!
Nr 2: Went over the handlebars night riding in Dalby, not significant damage but enough to require retiring it.
Nr 3: Not long ago on a rocky decent from New Mills Golf Course in the Peak. High Speed crash and landed on shoulder/head. Helmet almost as bad as the OP but poly outer remained intact. No headache or concussion but I’m damm sure it would have been a lot worse had I not been wearing the helmet.
I’m not in favour compulsion to wear helemts, I just think its sensible …and you really don’t notice them (well I feel uncomfortable when riding on or off road without one tbh).
….and based on my experience you would have to be an idiot not to wear one on technical off road terrain.