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 synthesize. On top of that, videos are harder to scan, harder to search, and require headphones or a quiet space to be consumed.