Especially for real law, you would have to define propaganda which I don't think has really been done.
I have thought about it and I don't see why all information isn't some form of propaganda because you're either bias on purpose by trying to persuade or bias by what you're aware of and know which can't be all information with our tiny human minds.
How do you measure bias without having some objective physical level model of the truth even?
I think the argument against TikTok and other Chinese companies is probably that you wouldn't allow Facebook by Chinese Communist Party and this crosses the line into that. To be fair though, you could probably ultimately make the same argument for US companies. Why is there so much money available for ads for VPNs compared to the financials of that market? Only a few answers to that one...