YouTube is so broken that to get your video anywhere you’ve gotta do some amount of “clickbait”. Even if it’s just minor like an arrow on the thumb or some capitals in the title! Good clickbait is when a viewer is attracted to the video & it delivers. Bad clickbait is lying.
I always get worried about my thumbnails because I don't want to come off as lying but I also don't want to come off as, "You'll never believe what Saurfang says to Sylvanas!" sort of clickbait either I like the truth. 