Seems a bit overblown when there's a review process in place. I'm sure it's not infallible, but still..
Well, until now I assumed Apple would test for patched vulnerabilities in new iOS releases too.
For iOS 9.3.3 there even was an app in the App Store, that could jailbreak your phone. (PG Client)
Why should a publicly known unpatched vulnerability be a lesser concern than something that you don't know exists?