I absolutely LOATH it when people post a video instead of a document or deck (except in cases when they need to demo something) because they essentially offload the work onto the audience. Obviously there are exceptions, but in general writing an update requires the author plan what they want to communicate. In my experience, off-the-cuff Loom videos are often rambling and verbose, and leave it to the viewer to synth…
On the creator side it takes an awful lot of time to create a clear and concise video, especially for people who are much more used to writing docs than creating videos of themselves.
Videos are a terrible medium for the audience, at least for any technical and referenceable material. They aren't searchable and are much slower to consume than text. Old videos almost never get watched, whereas some older documents get read often.