Awesome tutorial. And the idea behind the video is doing some talking and showing it in real-time instead of just text and screenshots. I prefer the video format (even though both essentially give the same information).
Partially it all has to do with whether people are more visual learners or "textbook" learners so im sure the two options are good for their respective audience equally.
the video idea is good because you can just pause and then replay as much as you want. but either way there is a lot involved in this type of thing so you cant truly portray it all through a video.
It's true, someone can make a crypto by copying the actions I performed in the video, but the question is will the viewer truly understand the concept, or just replicate the same actions?