I am genuinely asking this question. I can imagine FB would love access to all my comtacts, photos, location etc. Idk how it works on Android and if this occurs?
iOS is an incredibly secure platform mostly due to OS level security and carefully considered privacy in iOS libraries. Much of the benefit of the App Store is reducing spam and some data tracking, in addition to developer level features for IAP, subscriptions, and marketing.
I do appreciate much of what the App Store offers but has been exceedingly slow to update the review system, which has plagued developers for over a decade with inconsistencies and poor communication. I'm hopeful the increased competition will encourage some improvements on that front.
On android, the permission needed in the store doesn't mean I can't revoke any of them after the fact, or revoke one and not the other, and if an app install from outside sources they still need the permission request to be granted.