Perhaps not: I think your link is talking about "short movies" or "short films". YouTube's Shorts are "short videos". Movies (films) and videos are not the same thing: movies/films are a type of video, but there are many other types of video that are not movies, most notably TV shows, and also "music videos", but really anything that involves a moving picture. A "movie" (or to some, "film") these days is commonly meant to refer to a specific form of art, meaning a visualized stand-alone story that usually takes 1-4 hours to watch, and frequently gets played in a cinema.
Similarly, a "book" is a collection of bound paper pages, but a "novel" is a specific type of book that contains a story, and is usually a certain length (if it's too short, it's called a "short story").
So I think it's ok for YouTube to call their 60-second videos "shorts", as long as they don't call them "short films" or "short movies".
Similarly, a "book" is a collection of bound paper pages, but a "novel" is a specific type of book that contains a story, and is usually a certain length (if it's too short, it's called a "short story").
So I think it's ok for YouTube to call their 60-second videos "shorts", as long as they don't call them "short films" or "short movies".