Apple makes it pretty clear that they don't use the data that hits a server to identify you:
> When we do send information to a server, we protect your privacy by using anonymized rotating identifiers so that searches and locations can’t be traced to you personally.
> When we do send information to a server, we protect your privacy by using anonymized rotating identifiers so that searches and locations can’t be traced to you personally.
https://www.apple.com/privacy/approach-to-privacy/