From my perspective, it's not about censoring like China. It's about protecting your citizens from the possibility of a purposefully bad-faith algorithm.
Put another way, China has to defend its citizens from pro-US algorithms promoting capitalism because of how alluring it is. In a tangentially related way, America has to defend its citizens from algorithms that have not yet attempted to sway citizens (that we know if) but has the possibility to do so. We have no insight into the TikTok algorithms, so China are basically free to push whatever they want directly into the veins of our citizens w/o oversight.
That is not sustainable for a democracy in modern times. And yes, I can appreciate the idea that historically, humans will gravitate towards the best idea, and that citizens will see propaganda for what it is and adjust, but that is not likely given the echo chambers and virality of social media.
I feel like America has a history of committing these type of psy-ops overseas that prove this tbh.I think that if we can acknowledge that we've likely overthrown regimes through astroturfing, it makes sense that game recognize game and tries to cut it off at the knees.