My fellow Americans!
Youth sport is way, way, way more intense here than anywhere I've been before. I train at a multi-purpose sports field and I've seen baseball, rugby, soccer, and American football trained for here. Even the most of junior of groups have really punishing sessions with aggro coaches. It is really intense. I'm gonna argue that the video reminds me of baseball culture, which even at the junior level is unbelievably cutthroat.
Junior sport here is just totally on a different level to the UK, in my experience. It is wild out here, for real. I think I see that in that video, maybe.