Analyzing the typing experience in vim by looking at pure keystrokes would be a mistake if you don't understand the tradeoffs and benefits of having a modal system and operating the editor without leaving the home row or needing a mouse.

Good remappings/config would also significantly alter your experience.

In the example, why would you even move with single chars and not words or to the end of line? I think it's definitely a poor example because the point of the diagram/investigation is not clearly described.