No clickbait titles/thumbnails. They don’t play the hottest new meme games, and if they do, it’s a one off. No face-cam to act wacky on. No fake, over exaggerated reactions to fucking every little thing. No flashy editing that people think is the epitome of funny, such as zooming the screen in or shaking it during shows of emotion or text popping up on the screen constantly. No animated videos to catch the kid’s attention. Videos are a respectable length and not bite size unsatisfying lengths, when the average idiot isn’t willing to commit more than 10-15 minutes per video even though they’re gonna watch 4 hours of total YouTube that night.
Basically, they’re not as popular because they’re good.