I think the harsh reality is that most don't care , they click "Agree, Agree, Agree" on most of the popups they will ever get from any big App , assuming that big Apps will never do shady things, this is just a broad day light robbery of private information being done for everyone to see and it goes unpunished , Apple will not be enough to stop Facebook from gathering and abusing private information , it will need to be regulated in the law to have any chance to succeed , as you can see Facebook are willing to bet that most ppl will "Agree" to their agenda rather then move to another messaging app.
Regulation is way behind on this , imagine a world where you buy an Oven and you are obligated to allow the Oven company to use a microphone to hear everything you do in your home and a camera to watch it , that is if you want to use said over to cook your food , sure there are other Oven companies but they are small companies you never used and are lacking features and what not (I,e a lesser product) - I guess we can do better analogies here , but you get the idea.
This is basically where we are now , you text a friend about a new car you saw on the highway in a messaging app , 5 min goes by and you are bombarded with Car commercials in every online interaction you have for the foreseeable future , disgusting.
