Apple seems to think the UI frameworks should only focus on UI, and so overall arch is an afterthought. You can, of course, navigate and store state using the t

Apple seems to think the UI frameworks should only focus on UI, and so overall arch is an afterthought. You can, of course, navigate and store state using the tools provided, but it's a pain to do so beyond local screens, where you have to manually pass things around, and you lose most testability.