But it will still disclose that data to advertising companies which WILL give it to the authorities for a nominal fee
Also, why does the app keep that data in a centralized location where it can be scooped up like that?
And more importantly, people have known that everything is spyware since the Snowden leaks, why the hell would you ever give that kind of data to an app on your phone? Even if the app was totally E2EE and private, other things on your phone do all kinds of spying
To get the needle, you need the whole haystack. Collect everything decrypt later