There is no credible argument that the CCP doesn't directly control the alg as it's actively being used for just that in tawain/etc.
Does the US really want a (hostile?) foreign govt to have clear direct access to influence 170m americans, an entire generation - completely unfettered? Incredible national security implications. Bot farms can influence X/Meta/etc, but they can be at least be fought. TikTok itself is the influence engine as currently constructed.