What I want is very simple: I want software that doesn’t send anything to the Internet without some explicit intent first. All of that work to try to make this feature plausibly private is cool engineering work, and there’s absolutely nothing wrong with implementing a feature like this, but it should absolutely be opt-in.

Top comment of HN sums me up best.

Another HN comment warns about other breach of privacy option. By default, Apple collects your searches in Safari, Siri, and Spotlight. You can disable it in Settings>Search>Help Apple Improve Search.