I completely agree Margaret and I think you have all the important points covered. There have been some studies done on how visual aids can enhance learning, so I am definitely all for them - in fact I think they are more important and relevant now because years ago they weren’t as easily incorporated (either due to cost or device limitations). It is also something YouTubers and others using video formats are making the most of.
I’d love to see more traditional book publishers (like PragProg) adopt and lead in areas like this actually - where cutting edge learning technique are used to super-charge the learning experience 