Well I think in general you have more personally to worry about from your own government (which can legally apply coercive force against you), vs. any foreign government, particularly an adversarial one, with no extradition treaty.

Which is not to say that your own government shouldn't worry about national security- maybe the ban on TikTok could be more targeted, for example members of the government and military should not use it.

Anyway I was thinking more about the spying, and not so much about the influencing.