[angerman]

The whole argument boils down to how developers were treated with apples libraries so far. The submission/review process is quite prohibitive, and the core libraries (like almost every piece of software) have flaws. Together with the opaque intransparent radar bug reporting / bug resolution system, you had to resort to method swizzling to keep your sanity (I guess the PSPDFKit guys can speak volumes on that).

Going forward, I hope apple sticks to the open source approach they took with swift. That more of the libraries will follow, with Apple encouraging more community participation.