I think it’s already clear that a fake video isn’t necessary for people to believe something they already want to believe. You could just distribute a badly-com

I think it’s already clear that a fake video isn’t necessary for people to believe something they already want to believe. You could just distribute a badly-compressed screenshot of an unrelated video with a caption explaining the fake story behind the video. I think that would be more than enough, and I doubt a full faked video would provide much marginal utility.