TikTok does to the Canadian people what the rulers of Canada do to its people. That's why the govs are mad at TikTok: they can't ban its methods, for it's the same methods the govs use to fool their peoples. TikTok simply identifies your fears, likes and dislikes, and plays on them. It can divide the populace into two sample groups and run an A/B test on them.
However that's not the endgame. I believe the current phase is simply gathering data and creating personal profiles accurate enough to imitate humans. With a bit of progress in AI those imitations will be used to create videos on the fly, tailored to each user. Those videos won't be limited by laws of physics or common sense, and this will give them an impressive insidious power.