banning the usage of WeChat for public officials or national defense companies and so on would make some sense, I fail to see however how TikTok is a security threat. It's just a response to the clash over the border and nothing else, and not really a particularly effective one at that.
Yes, some of them are somewhat hyperbolic like the Apple keyboard thing which was apparently related to some sort of anti-spam feature, but in general that makes TikTok a privacy mess, which is undoubtly true but not really grounds for a national ban on the basis of security. By that logic you'd have to throw half the app store out.
> not really grounds for a national ban on the basis of security
All Chinese companies are completely at the mercy of CCP. No two ways about it. If tomorrow a War does break out between India and China, then the CCP can utilize these apps to spread propaganda to influence Indian public against the Government. Foreign interference is grounds for strengthening National Security. And this ban is not from the Government alone. Indians have literally been demanding a boycott of Chinese apps and goods for well over a year now! So it is actually the Government which has acted late!
It is not easy to get an app rating to go down from 4.9/5 to 1.3 within few days on Google Play Store when it has close to 1.5 billion downloads. You can imagine the anger among the Indian public.
Tiktok can be a huge threat because their recommendation algorithms are black box. This makes them capable of controlling how potentially dangerous information is disseminated in the United States, including topics influencing elections.
>And why beholdest thou the mote that is in thy brother's eye, but considerest not the beam that is in thine own eye?
If you're concerned about Tiktok influence where most content can be described as attractive young people do nonsense on camera you should be much more worried about Twitter, Facebook, Google, News media, Reddit, etc.