Earlier quoted context omitted.
I wonder if Cocoa is that language specific or if it’s become legacy tech. When Swift was announced and when I explored it for personal projects, I was very much calling Cocoa APIs. They definitely catered to ObjC-isms, but my impression was that all of the underlying UI frameworks were being preserved even if they might gain additive APIs to be used less awkwardly in Swift.
This year Apple made the point Objective-C is done, time to move on, for those that were still wondering. Around minute 4, or go through the transcript. https://developer.apple.com/videos/play/wwdc2022/102/
Likewise for AppKit.
Apple, the “do as we say, not as we do” company.