The US government working with social media companies to censor Americans (and other people) on those platforms is also pretty bad, yes. My impression is that their influence is much weaker and more marginal than is the case with the CCP and tiktok, though. But I would be sympathetic to other countries banning US social media on the ground of US govt influence.

How can you acknowledge that the USG colludes with domestic platforms to censor Americans and not think that it is targeting foreign platforms because they make that censorship more difficult?

You know, the obvious explanation that doesn’t require an unseen CCP bogeyman.

On the one hand, leaving the potential for CCP propaganda to reach citizen's eyes can be a threat model for insurgency. On the other hand, leaving it monitoring the data coming in, then earmarking when there's an uptick in "flagged" packets or whatever could be a valuable heuristic. It all depends on the point of view.