Why is he so bent over doing this rail?

https://www.instagram.com/reel/DXztfHzMrb\_/?igsh=OWZtMmJuaTY4dWI2

Obv he nailed it, and it looks totally sick. But from a technique perspective, can someone tell me why he would hit this being so bent over at the waist? I am new to rails and just trying to understand body positioning hitting diff features etc