Toxic privacy invading advertising companies complain that Apple is advocating for their customer's privacy.
"it is possible for ad tracking companies to recreate the majority of a person’s web browsing history"
"This information is collected without permission and is used for ad re-targeting."
Google doing the same thing except allowing it's own privacy invading software through.
https://www.theguardian.com/technology/2017/sep/18/apple-stopping-ads-follow-you-around-internet-sabotage-advertising-industry-ios-11-and-macos-high-sierra-safari-internet