Wow those diagrams are extremely well thought out and clear to understand. Saying they’re just blue boxes is a huge understatement. Visualising highly conceptual topics like numerical programming is not an easy skill, and the more the better.
Yes. Does it mean it's bad? For people that just start to learn the library, it's sometimes useful to have a visual representation. Also, helpful to have a list of main features.
3245 words should be more than enough for that :) My greatest concern about the text that it would be too much of it for something called "Visual Guide", so I tried hard to keep it to bare minimum.