It was banned because of a law passed by Congress. Representatives aren't bureaucrats.
Except that TikTok isn't legally a Chinese company, and isn't really under their jurisdiction.
Chinese companies like to be under the control of the Chinese government no more than big American companies like to be overly exposed to the US... Thus Apple being based in Ireland and keeping most of their profit outside of the US.
TikTok was a threat, and will remain a threat until it’s divested from or shut down.
All algorithms are monitored by Oracle such that only user actions can determine what they see.
So, unless you're claiming that "Oracle" is actively colluding with China, you're letting your worldview be defined by government propaganda.
The Pro-Palestine thing that TikTok refused to suppress at US Gov's command, is not "China promoting Eastern causes", it's "Americans" taking a position that the government wants suppressed.
Thus Biden being forced to cave and at least pretend that he cared about Palestinians towards the end of his Presidency... Which he stopped caring about once Democrats had lost and it no longer mattered what Democrat voters think for the time being.