There are two big problems with this (not that Apple’s caprice is the only alternative):

1. The vast majority of people are Grandma, and they do not have a Johnny available to administer their tech. Most people are not technical.

2. The vast majority of Grandmas will follow instructions on a “how do I share cute photo” website even when that website directs them to dig deep into configuration settings and ignore six “are you sure you want to allow this app to fully remotely control your device?” warnings. Even if Grandma has a healthy suspicion of scams, when she is instead trying to accomplish a goal she will suddenly prove quite adept at giving software with questionable provenance root access to her life.