> Don't worry about the US. It is still the greatest country and will remain so for at least 50 years.
That's a shortsighted and very optimistic viewpoint, dripping with typical American pride.
You're underestimating just how much damage foreign propaganda and misinformation can do and has done to your great country. Trump getting to power, and still being a strong contender for 2024, mass delusion and rising popularity of conspiracy theories (QAnon, pizzagate, etc.), record-high social unrest and division, racial tensions, protests, marches, insurrections, etc.
And this is just starting to unravel.
The ironic thing is that all that great technology built by the US, allowing everyone to join, connecting the world and whatnot, has been the perfect weapon of information warfare. You've essentially built the weapons, and handed them to your enemies, and are somehow still debating if that's the case, and what to do about it. This confused state is indicative of the effects of psyops, where the afflicted adversary doesn't understand the situation they're in, or how they got there. An ex-KGB agent explained this well way back in 1985[1].
The East certainly has an advantage, considering they've been doing this for decades now, and Western influence on their own population is close to zero, because of their isolation from the internet.
Banning TikTok is a good defensive measure, but it's too little, too late, to reverse the damage already done, and to stop the bleeding. The US would have to do a major shakeup and banning of foreign accounts across all social media sites, and judging by the reactions on this well educated forum alone, that wouldn't fly with the general population, who perceive this as an infringement on free speech.
EDIT: Ah, it seems the bill is broader than just banning TikTok. Good, it might be the only playable move. Unfortunately, it requires more government oversight at the expense of some civil liberties, and I can already see how unpopular this will be.
Buckle up, it's going to get even bumpier. I suspect the US in its current dominant position won't last more than a couple of decades, at most. Funny that with all its untouchable military power, it's completely defenseless against this type of attack.
[1]: https://www.youtube.com/watch?v=pOmXiapfCs8