If they aren't ready, why does apple use them?

> Apple does right to forbid their use to avoid crashes on the next iOS upgrade

Why doesn't this argument apply to apple? Are there any other methods of preventing crashing?

> Your complain should be: Apple doesn't open source their system.

No. My complaint is that apple doesn't treat developers as fellow programmers, but more like "end developers" or something. Apple gets to do it differently. Case in point being OP's post.

> And I don't understand why you post random links about issues you are not familiar with

You're projecting :-/