Nina Morganna B. I feel like a lot don't and to me if it's your video it should also be your own thumbnail, or like when you use music your list for copyright, maybe thumbnails should be the same if using another's photo :)
Nina Morganna B. THAT'S IRRELEVANT, they are still doing it and it's misleading, we are watching their videos to see the stuff that they put on their thumb nail and, it's not on there video.