Obviously, this should be something Apple invests into itself. But they're not going to do it because their culture does not value it; actually, they're often culturally blind to the fact that it might even be useful to provide this. With SwiftUI this kind of nearsightedness really hurts the platform.

i think they have a very strong momentum to pushing os releases since... forever...

decoupling is hard to do and i was shocked (and gratified) they backported async/await... but swiftui is ui-level, im guessing there must be some real pushback for backporting it...

as a customer/developer, the whole os release every year is getting kind of old tbh...