TIHI was a fairly large sub, with almost multimilion level of subscribers. If reddit wanted to increase traffic and get more eyes on ads, they're doing quite a terrible job of it so far.
It was more than a sub to meme on things you/to dislike, it was more like Oh Gosh Why Would This Exist Thanks I Hate It!
Have you ever imagined a bird with teeth? What about a gif of a needle going into an eye? Or maybe a nice chocolate milkshake in a butt-oriented sex toy.