Even the videos at the latest WWDC have been really challenging. For example, the videos showing new Document Driven apps in SwiftUI never released their sample code as a lot of developers sought here: https://developer.apple.com/forums/thread/651193. They really just presented a glorified demo and a few slides.
And yet the old approach for Document Driven Apps is completely out of date straight from the banner page here: https://developer.apple.com/document-based-apps/ (https://developer.apple.com/library/archive/samplecode/Shape...). As mentioned in a lot of comments, there's a real desire to build apps natively but held back by bugs and the lack of entry through even sample code.