The problem with iOS is the lack of freedom and control you have as a user. Yes, Apple may be “better than Google” when it comes to some aspects of default privacy on their devices (being better than the worst is hardly something to brag about), but as a user the level of privacy you can achieve on your iPhone is always limited by the design of the operating system, where you are just a user with no permissions and no ability to modify or even replace the operating system entirely. You are locked into a proprietary ecosystem that you cannot get out of.