If that’s the argument then you need to regulate social media as a whole. Instead this is specifically geopolitical intrigue rather than any care about the mental health of the American people.
Microsoft/Meta/A conglomerate of record labels(?) will buy TikTok and it’ll continue to exist just as it does today.
No, actually we dont. There is no divine mandate that requires us to do that, especially in a scenario where the geopolitical rival is using our credulity to their advantage.