Comment by kelnos

Sure, there are many avenues to spread this sort of propaganda, but a state-run social media platform can certainly be a lot more effective than someone flooding someone else's social media platform with propaganda.

Assuming the Chinese government is using TikTok for influence campaigns (they'd be foolish not to), they only way to stop it is to outright ban it in your country (which the US seems to be trying to do, with possibly-disastrous effects), or find a way to get your citizens to dislike it (good luck with that).

While Russia is doing pretty well at their influence campaigns on other platforms, those platforms can choose, if they so desire, to step up their detection and banning efforts. It's a constant cat-and-mouse game, of course, but it's at least possible to stamp out most of that crap if you're willing to spend the resources to do so.