Which are both control issues not security issues. There's no actual security reason for iOS to be locked to Apple's webkit exclusively and there's no actual s

Which are both control issues not security issues. There's no actual security reason for iOS to be locked to Apple's webkit exclusively and there's no actual security reason for iOS to not allow JIT'd code. Those are both control issues, not security ones. JIT in particular is purely a control issue - the process itself is already sandboxed which is the one and only actual security boundary here. Preventing a JIT doesn't prevent arbitrary code execution, after all, especially if there's an interpreter in play which Apple sort of allows.