There is needless damaging going on. No screening and a retarded or no progression at all. With bad technique. If it would be just useless training, that would be ok. Most Fads are like this. But this actively harms people : see high rep box jumps and Achilles tendon ruptures, kipping pull-ups and SLAP lesions and high rep Olympic lifts and broken bodies. Short term results by pushing hard and resistance training for the first time in their lives. Then long term failure.