There's a substantial limit to public knowledge about those methods and APIs. We've been able to discover more of them, and more that work on current versions o

There's a substantial limit to public knowledge about those methods and APIs. We've been able to discover more of them, and more that work on current versions of iOS than other teams. Those techniques unfortunately go stale very quickly and most of what you find stopped working in iOS 12 or earlier, yet people still rely on them and think they work.