You won't be able to tell when they're not following the rules.
If we actually care about surveillance by App, we have to make rules that can prevent that including requiring levels of access and transparency to enforce those rules.
Of course, there is little appetite for making those rules... But that doesn't mean that such rules are impossible.
> A China-based team at TikTok’s parent company, ByteDance, planned to use the TikTok app to monitor the personal location of some specific American citizens, according to materials reviewed by Forbes.
I'm no fan of the CCP, but I'd take Chinese propaganda over American censorship any day.