How to get URL link on X (Twitter) App
Apple is throwing their own HIG's out the window here. Split views, panes, check boxes and modal panels are out. Instead we have a vertical UI with iOS-like grouping and tiny switches. 
It was well over a year ago that I started working on this feature. The first version was built completely in AppKit, and while the potential was there, working with AppKit grew harder and harder. Complex hierarchies and layout led to performance issues and lots of verbose code. 

https://twitter.com/steipete/status/1384082367191470084You need to throw everything you know about App/UIKit out for a while. SwiftUI is not only declarative in its syntax, but it’s also an abstraction where platform, SDK and context ultimately decides what will happen. Never take anything literally until you’ve tested it.