This is a consequence of the composition of Apple's security engineering organization. If you look through the LinkedIn profiles of the people in the org that delivered this feature, an interesting pattern emerges: a significant number of them are ex-IC. Back in the golden age of early iPhone development, the org used to have almost full autonomy and was run by a bunch of Mac fanatics and UNIX nerds. Today the org is full of people who were spies in their previous job. It shows.