Everything has been downhill since they let people upload custom thumbnails honestly. That shit should pick a random frame from the video and attempts to game that (like re-uploading 1000 times until it happens to select the portion of the video with the desired thumbnail) should be flaggable. The thumbnails, which used to be indicative of average content of the video, have just become visual clickbait. Oh how I miss the early days of youtube when these were just random frames from the video.