Earlier quoted context omitted.
Having US data in US hands doesn't seem like a terrible development to me. In China, the relationship between tech companies and the government is very close, and none would question any data requests. Its nothing like Apple which openly fights the US government in the supreme court..
Apple fights to not be forced to unlock phones, which is admirable, but they'll happily turn over your iCloud data. To me the greater outrage is that the president can arbitrarily decide which apps citizens may or may not use. I would like to make that choice for myself, thank you very much.
Do I like Trump in general? Absolutely not, but I also don't automatically start cursing any decision he makes just because its made by him without trying to use two brain cells to analyze it first.
I feel safer knowing US data can be accessed by US government entities than foreign ones, specially ones that have a documented track record of industrial espionage against the country. Can't imagine what good can come off the Chinese government having access to PII and potential backdoor capabilities (e.g. the clipboard scandal) of tens of millions of children of US engineers/politicians/workers.
Is there a single reason why that can be good for the US citizens?
The choice of the president wasn't about the "app" itself. It was about the data being stored in foreign lands. If the app didn't have copious amounts of data of US citizens, he wouldn't have cared, even if it had a 100% user base in the US.
Europe has very similar rules on EU data being stored in EU data centers. Germany is a good example of those policies and no one seems to critisize them, because no one "blanket-hates" European leaders like they do to Trump.
The decision to ban was because TikTok didn't seem to be willing to cooperate to fix the data locality problem. Had they promised and started moving their data centers to the US, I doubt this would have happened. The acquisition by MS if happens, would do just that and allow the app to continue being used.