I agree to pretty much all the previous answer (text >>>> video), just adding what's missing from my point of view:

Video can be fun. As irrelevant as this might seem at first, motivation is an important part of every learning process. If you can make the information easier to digest for some people, it can make their learning progress more efficient and effective.

"Being fun" can relate to literal jokes (which I like much less in text documentation), presentation style, atmosphere. It can also help to address more sensory modalities to support learning (like audio, colors, or sometimes people just like having a face explain things to them).

I also feel I need to focus much less to follow a video than I need to digest a technical documentation in text form. Yes, I might spend more time on the video to achieve the same understanding, but I can consume it in more situations. For example, when tired before going to bed, or while eating, I might still watch a video about something I'd like to learn, but rather not scroll through the corresponding docs.

Ideally, videos would be additional to clearly structured and comprehensive text docs. But as much as consumers are people, producers are, too. If they happen to prefer video for whatever reason, and don't have the resources to do both, video is what you get.