You're tautologically correct (TikTok is banned because TikTok is banned!), but that still doesn't answer the question. Put another way: if whatever Tiktok is doing represents a categorical privacy/security threat, then why aren't they banning all apps that engage in said activity, instead of just Tiktok?

I suspect the answer is that Tiktok is just doing the same as Facebook etc, and that's unacceptable only because the mined data might go to China.

It is quite likely the US will continue to look at companies on which CCP can have control over. I agree it is odd to not have made a more comprehensive list.

Those two examples are fundamentally different and it’s silly to conflate individual action with coercing the app stores to discontinue supporting the app.