Form itself becomes unecessary for 自分, as 自分 cuts through all of 相手 w/o needing to move, a beautiful expression of martial art where the intent of action is far more lethal than the action itself
However, if form's unecessary, why still do it?
Simple
His martial art is not a mere tool for violence, but an Art, as that itself is the essence of Martial Arts; For there is no Martial Arts w/o Art