Says a lot about what is broken, incentive-wise, about the modern Internet.
Modern social media has only succeeded by moving away from text, and meeting the masses where they already are. They mostly don't want to read.
But I think there is a discoverability dynamic at play as well. Finding a blog post that isn’t garbage can be harder than finding a decent video on any given topic. This is clearly a feedback loop towards video but I think partly this is because up until now you couldn’t just create a spam video channel with the same ease that you could a spam blog.
I don't see an issue with there being multiple ways to learn how to do something, whether it be textual, images or video.
For this type of thing having a video running in the background while I punch in the commands makes sense, I can perform the actions at the same time the video does.