They are just promising not to share with the government or any private entity that you are the idiot who had to use a calculator to find half of 17, just in case you were worried about someone finding out.
I believe it’s about how often the app is used. Advertisers label people with “gullible” and stuff like this, so when you use a calculator regularly, that may be a hint that you are not.
This is why everyone is trying to have their app installed, there’s a lot of information that the phone provides, and now you no longer get warned what data is available.