I've worked in advertising and ad-click networks for over 9 years, and it's funny to read "Banned by Google"... Google supported the most scummiest of advertising/ tracking tactics themselves, that is until someone else started doing it.
Google has been trying to build their own little silo (and used all sorts of dirty tricks in past also) for things with AMP and ads and stuff for a while. So this just sounds a bit bizarre.
Not good of them, but doesn't seem like a national security threat either..<p>I haven't used TikTok much but the material there seems quite innocuous so I don't see how Chinese government access to data from it is a serious threat. There seems to be a lot more potentially embarrassing material posted to FB & Twitter, and I suspect the Chinese government & others are scooping up what they can, at least what's posted publicly.