I think points 2-4 is one of the most interesting/innovative parts of it. As far as I've read, when someone (or a new account anyway) uploads a new video, they

I think points 2-4 is one of the most interesting/innovative parts of it. As far as I've read, when someone (or a new account anyway) uploads a new video, they will always run it against a sizable test audience, so content that's engaging is guaranteed to find an audience. On other social media platforms creators need to hustle to get their presence off the ground. This way, TikTok can sustain a much broader base of content creators and react much quicker to shifting trends without being dependent on any popular creator's opinion.