Cocoa is object-oriented, but modern APIs not so much. They are of course based on interfaces/traits/protocols (whatever you want to call them) but it’s not the

Cocoa is object-oriented, but modern APIs not so much. They are of course based on interfaces/traits/protocols (whatever you want to call them) but it’s not the same as 90ies style inheritance-based OOP. It’s the inheritance as basis for behavior is what I want to see gone. But even Cocoa already embraces composition more than inheritance.