As said in some other comments, TikTok does not use a "follow" model, new content is algorithmically recommended to you. Therefore there is no problem with the content creators you're following burning out or your follow list getting stale. For example my highschool friends are no longer that active on facebook, and in 2020 I'm no longer asking random people to add me to FB, therefore facebook is now kind of dead to me. My youtube follows like Ryan Higa etc are burned out, hence youtube is less useful for me. That'll never happen with TikTok because my follows list is irrelevant. I see pretty much only fresh faces with content I'm interested in.