Never forget people, Apple's emphasis on privacy is only a means to an end, that end being "making money". If Apple needs to relax privacy to help its bottom line, it will, as this example so incisively demonstrates.
I am not bombarded with ads when I use iMessage on my Mac like I am when I use Skype on my Windows PC.
Apple has built in support for third party ad blockers. Google would never develop a system to allow ad blockers in Chrome for Android.