WSJ has made a 13 minute video about how they used many bots to try to uncover how TikTok suggests videos. The video could have stopped at the first 30 seconds and it was all they would need to say, but they really want to deceive themselves and their readers about what is going on: TikTok taps into military surveillance that all who are within the range of a phone tower are subjected to. The same source for TikTok is also fed to terrorists who use it for crimes against humanity. A simple experiment with an air-gapped computer is all it takes to attest some of this, but unless you have been recruited to be part of the covert operations, you won't know the full extent of it, like I do.
Link to WSJ's video: https://www.wsj.com/video/series/inside-tiktoks-highly-secretive-algorithm/investigation-how-tiktok-algorithm-figures-out-your-deepest-desires/6C0C2040-FF25-4827-8528-2BD6612E3796
This suggests once again: journalists need not apply, the second american revolution needs only those who can act instead of only writing useless words.