I do not see it that way. A phone call is really quite different.
A person’s time is valuable and a phone call can be answered and dispatched as quickly as I wish. A video though may require spending upwards 1/2 hour just in case the interesting part was towards the end, without any information then how is the person to know what is the interesting part.
When someone puts a link to a video without telling you what it is about then how is that person going to know if its worth watching and not using up their valuable time. Do you go to the movie theater without knowing what movie you are going to watch?
The person who posts a video is wishing others to enjoy the video they thought was good, so why not tell them why you thought it was good and get them excited enough to view it. Doesn’t have to be a summary, but just enough to inform. One or 2 sentences is very often enough.