If you thought Cambridge Analytica was bad, wait 'til you find out what a China-based company can do with detailed preference and arousal data from young people.
In fact, given the general distrust of China in the West in international politics, feels like national governments are more likely to respond to any emerging harms than they did with Facebook.
https://www.cnbc.com/2022/02/08/tiktok-shares-your-data-more...
The motives of a company controlled by the CCP are much much murkier.