Those are valid criticisms, but can equally be applied to all of the rest of our main social media platforms.
I’m not seeing a big difference here between TikTok and YouTube except that one is not able to be influenced or backdoored by the US government and the other is.
In essence the optics here look an awful lot like the US simply doesn’t like other nations mining their citizens data that they want for themselves, and having foreign control of the type of news being fed by their algorithm.
Just remember that before Snowden dropped a dime on the NSA, similar suspicions sounded pretty wacky too