I don't quite follow you. Are you advocating that any app that requests deep access to your phone should be banned? That sounds weird/excessive.
Well.
Chinese apps are kind of inherently a problem for western democracies because there's really no separation between a Chinese corporation and the Chinese state. And a social media app that records video and sound captures large amounts of extraneous data by its very function. You can figure out without too much difficulty who uses the app, where, when, what they look like, what their voice sounds like, their interests and habits, information on their movements, educated guesses on income/wealth, similar information on friends and family who appear in their videos, and more.
That's a lot of info you might not want a totalitarian killer regime to have access to, if you live in the "free" world at least. TikTok or whomever could say they store westerners' data outside China, but this is the internet. This data can be accessed from anywhere, where it is stored isn't nearly that important really.
Well, that is a legit concern, yes.
If it was anyone but Dumpy, I would say you'd be off your rockers. But he's such a petty, thin-skinned, vindictive bastard I totally would not be surprised if you're right.