I have a side question. Is there just an entire industry of anonymous low cost labor countries that YouTubers outsource their video compilation to, where the service is to gather 300 random clips that vaguely relate to the text being spoken, but are not the person's own work or research?

Without even realizing it for a while, I started to mistake a video that basically stated someone's collected assertions/opinions/variously supported research with pseudo documentary journalism because of the huge number of video clips being played as the person spoke.

Or these amount of clips are just needed to hold someone's attention if the person making the video is only doing a voiceover? I guess otherwise, nothing distinguishes the video from a podcast.