Do we need 3D figures to show action?

I had to post and comment about this animation, since it’s too creative. What I like the most is how the author uses the 2D space, in fact only lines and stick figures, to portray the whole space and depth, when the stick figure jumps and rotates in space. Also it’s creative to show the contrast between current games with ultra modern 3D frameworks and this stick figure animation showing the same intensity of fight.