From what I read, I think the issue is people keep claiming it does all this various "spyware" stuff, when it sounds like it's doing
nothing that any other app could do, given the (what appear to be) lax permissions of android/ios.
If people are so worried about what tiktok can be gathering outside of the app, that is a problem for apple & google.
For this, I think it's 100% overblown what people think tiktok is doing. It just doesn't make sense. If it was really some kind of massive spyware, I agree apple/google would be all over this.. but they aren't.
This comes down to a lack of trust in China obviously, and I don't think there's anything really more concrete than that.