it is Trump's strategy to be trusted by the public that he is a type of nationalist person, on the pretext that tik-tok can steal user data so Trump is now banning China from trading and influencing US society from the influence of tiktok, of course this happens because there is trade war between America and China. but indeed Trump is a very nationalist person.
He is really defending its people's privacy and security. We all know that US and China do really have a lot of conflict especially in the economy.
China is all about domination, he is all about being a businesses-minded country, and they want to dominate even the market and economy. This simple banning of Tiktok app in the US can really help the economy of China somehow go down. US is a big country and there are a lot of tiktok users in their country so probably it will cause a huge impact in China.
This is a good approach of Trump to affect the economy of China, war is not only about using massive destruction, it is also the economy, a country should need to attack and prioritize.
Nothing is private this days ... privacy is dead ...
Before you download the app they could put a note ...
If you are talking about privacy, it is really hard to protect it especially if you are not aware about the apps that you are using.
You should inspect and check the security of an app before downloading and using it with your own personal information and details.