I'm not sure it is universal. I love the written word [1]. You can be precise and make nuanced arguments with caveats and qualifications where required. You can skim when reading it in a way you can't[2] with video. However some things are better and more easily shown than explained and some people have a preference for visual explanations.

[1] As I suspect most people spending much time on this site do as they aren't here for the pictures.

[2] Actually video editing software does give mechanisms for rapidly scanning the video so perhaps it is possible but not offered in web video software that I have seen.