A big part of that is how the media is used to push a particular narrative. Every US tech company plays ball with the US government and moves in lockstep with US foreign policy.
The threat of Tiktok (to Western governments) is that allows users to see things that other platforms bury, downrank, outright block or otherwise censor.
A big example of this was the train derailment in East Palestine, OH [2] last year. I reember for at least a week seeing things about the chemical spill, the evacuations and the smoke from the burn (which was visible from space) and I saw absolutely nothing on mainstream media.
You see this in the last year where what's happening on the Middle East manages to get out on Tiktok in a way it really doesn't on IG, Youtube or Facebook [3]. Information simply cannot be tolerated to move as freely as this, hence the scare campaign about Chinese control of Tiktok.
That's why you don't see any effort to, say, have a data protection regime. The goal is to control what you're allowed to see.
[1]: https://en.wikipedia.org/wiki/Manufacturing_Consent
[2]: https://www.wired.com/story/east-palestine-ohio-train-derail...
[3]: https://www.hrw.org/report/2023/12/21/metas-broken-promises/...