Google has the same thing, and with apple if you care you can opt out.
"When Limit Ad Tracking is enabled on iOS 10 or later, the Advertising Identifier is replaced with a non-unique value of all zeros to prevent the serving of targeted ads. It is automatically reset to a new random identifier if you disable Limit Ad Tracking."
So this is a positive in apple's case over google privacy wise, not a negative against google.
"- iOS is extremely restrictive, making certain privacy adjustments impossible."
Generally you can't get unremovable malaware installed on an iphone you buy from apple. If this type of privacy restriction makes you choose android privacy invading phones - go for android. Many people like the locked down Apple setup.