TikTok was stopped because it was eating FB's lunch. That's it. There is not a single argument that applies to TikTok that doesn't apply to FB or some other company
See:
- CHIPs act
- Ban of sale of many nvidia GPUs to China
- Ban of export of ASML euv tech
- Huawei ban
- Chinese EV tariffs (ban?)
- whole host of tariffs
- China south sea tensions
- Chinese support of Russia who is a threat to NATO allies (and invaded a sovereign country) - Ban of most US tech companies in China
- Chinas mutual aid treaty with North Korea