It's telling that most of the responses to this question center around why the YouTube video creator would want to make a video instead of a simple text description, not what the OP asked: why the user would want to intake the information by way of video.
Says a lot about what is broken, incentive-wise, about the modern Internet.
Definitely there has been a shift towards video content.
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.
Not just social media, at work you're lucky if anyone reads the docs, and blessed if you find someone writing docs. To say nothing about how the substitute for those is looping zoom meetings.
How so? People like to learn in various ways, some people like to read, other people like to inspect someone else doing it in real time.
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.
Says a lot about what is broken, incentive-wise, about the modern Internet.