my take is apple should've hired or worked more with external partners in terms of handling swift.

1. the language had all the right hook points to replace python - but then it was closed off in the apple ecosystem for a while. then it was made to be complex as C++ as time went on. if Swift had remained as simple as Go - and Apple had made a push for swift to go beyond apps in their ecosystem the language for data/ml would be swift

2. in regards to swiftUI - almost the same point as 1. react native took over cz it was a simpler more open ecosystem. then eventually most people stopped bothering with native apps (they're used to track you) - web apps are equally good. hence for most people they use native apps for maps, banking.