Earlier quoted context omitted.
The point the parent is making is that Apple doesn’t have your data in the first place, therefore if things go south, or they become nefarious, you’ll have to give them your data first.
Umm Multiple apple services collect data on your usage like Google does. They don't use this data for Ads Personalization but they do have the data.
Provide a source. Apple is pretty transparent in its iCloud security overview[1] and iOS Privacy Whitepaper[2].
[1]: https://support.apple.com/en-us/HT202303
[2]: https://www.apple.com/business/site/docs/iOS_Security_Guide....