I watch a lot og gaming videos on youtube, often of new indie games to see if I want to play them. Some creators will use AI-generated thumbnails that look nothing like the actual game, and before I recognize them and ignore that creator, they'll get clickthroughs. And then I'll see that I was bamboozled and exit the video.
I don't care if someone uses AI to "style" their thumbnails, but if you use it to completely misrepresent what the video is about I'll leave in protest. That has nothing to do with AI, and everything to do with the fact that it's clickbait. I don't like human-generated clickbait either.