If this is something you worry about (I do too) I sincerely hope you don't use Android or other Google products. Unlike Google, Apple has no incentive to collect and mine your personal information. They make money off hardware, not profiling you and selling your eyeballs to, literally, the highest bidder.
Even the advertising identifier, which you can reset, is an attempt to reign in user tracking. Apple Pay generates a unique ID for each transaction rather than handing your information over to the store. Spotlight search hashes app information and stores it locally. They actually go out of their way to protect privacy, unlike many other businesses I can think of.