I'm the last person to talk about art, but from a technology standpoint I think the end result would have been better if something that supported keyframes was used, like https://www.synfig.org/ or blender.
Keyframes would have made it easier to have 4x the number of frames making it smoother and easier to tell what is going on. Also, I'm sure it would have been more work to get started, but building up vector versions of things using bones would make it easier to put together the 2nd+ animation.
I want to use a midi controller with jog wheel to step through content fast or frame by frame, and to easily set and jump to bookmarks, for all sorts of tutorial content. I've looked for something like this for years, and every time I search it seems others want this too, bit there are always technical details that make it not as straight forward as one would expect.
I couldn't understand how the "twist the loop" step works until the very end, where the penultimate animation reveals that the hook end moves in clockwise direction, whereas throughout the earlier parts of the articles I thought it has to move counterclockwise. I think this step needs to be slowed down (with more intermediate frames), and to have some extra depth cues.
Keyframes would have made it easier to have 4x the number of frames making it smoother and easier to tell what is going on. Also, I'm sure it would have been more work to get started, but building up vector versions of things using bones would make it easier to put together the 2nd+ animation.