Disagree strongly. Just as easy to lie or shade truth or make silly pronouncements, unfounded opinion, in a book as in a video. Greg, the subject of this debate, seems to me hold strong opinions but to base them on original source material, as much as possible. That's the way good academic historians are supposed to do it. Whether mode of presentation is written or video has nothing to do with the validity of either opinion or research.The problem with watching a video, is that you're listening to someone's opinion.
Reading books from the source may not be as entertaining, but far will be far more accurate.