While this is our course a good point, one extremely good part about text is that unless there given text is quite literally just plain text data, it's a lot easier to embed things like videos, pictures, audio, etc. into a textual medium especially when compared the other way around -- that is the fact that text in videos and pictures and so on tends to be quite limited when compared with the kind of "rich text" with the more audiovisual content added between blocks of text.

So one can use the thousand words of pictures while most content is textual, whereas the other way is significantly worse, since it of course lacks all the searchability et al.

You're discussing a mixed content document format, the original point was about some mythical benefits of text, explicitly vs video, which removes all the embeds from your document