Great point. Also, one of the core principles in this article is that habits are more powerful than tools & features. So if you are a happy and consistent user of Apples email and calendar tools, then you absolutely should stay. It would be crazy to switch.
For more general advice though, the productivity benefits of Google’s cloud (add-ons, search, features) outweigh the ad-tracking. And so the way to get around that ad-tracking is with other tools (ad blocking for instance).
In the specific case of the iPhone experience covered in this article, the combination of turning off Apple’s ad-tracking setting and defaulting to Reader mode in Safari will greatly reduce the visibility and targeting of ads you see.