[argestes]

I agree with your observations. Even though we also have to consider that this video and the text for it was probably written or edited or at least administered by Walt Disney himself. You can see that Mickey is kind of communicating with Walt Disney on the video. That means the cartoon on the video was made just to show this piece of technology. I think we can say that this video is a way to show the technology of Disney at that time. It's kind of an advertisement for a big coporation.

On the other hand Youtube videos are made by people trying to make a living through those videos. None of these Youtubers can have the resources and motivation compared to Walt Disney himself to shoot a scene which can be watched and enjoyed even after 71 years later because your videos has to be produced quickly.

[flyingcircus3]

Another obvious tell is that the two technicians operating the multiplane camera have absolutely zero stage presence when they are demonstrating the actual operation. It is plain as day that they have practiced their lines, and not for very long.

But thats ironically how I knew they were the actual technicians, and not paid actors who have no clue how cameras or human vision, or any of these subjects actually work.