Also this actively undermines quality in what they do, a requirement to make changes, may make people make changes that aren’t needed, and even possibly changes that can be detrimental to the function.
Indeed, but not only that. Having employees that have as their only task to spend that much time on such a mind numbing task is pretty much in itself a guarantee for poor quality work. Such work should be divided up among people who do other things as well, so that they can break the video watching up in smaller pieces to be able to remain focused and do a better job.