There are ad blockers on iOS, too. They are implemented in such a way that they can not spy on you—they simply provide a „block list“ that is executed by the browser. Works pretty well in my experience.
Ultimately, you have to trust someone. Unless you write your own compilers in machine code, and get the source, review it, etc. you have to trust someone along the chain. Hell, Intel/AMD could be fucking with you via the CPU.
If I have to trust someone, I trust the multi-trillion dollar company built on privacy. If they are found to be spying on people, the hit to the wealth of everyone who works there will be massive.
Made me laugh. For nine month I gave a chance to full-time android phone, and every two weeks or so it showed me ads based on what I discussed with my coworker in voice (I mean mouth and ears, not voice messaging) but never googled etc. If Apple does that, they at least pretend not to.
