Because after iOS 14, users have an expectation of being more private when they weren't. You can apply this anywhere: FDE being broken. Zero days being used

Because after iOS 14, users have an expectation of being more private when they weren't. You can apply this anywhere: FDE being broken. Zero days being used on journalists. Security theater post 9/11. Your 4 y.o. choking on a toy deemed unsafe for age 0-3.